Elcock v. Kmart Corp ( 2000 )


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  •                                                                                                                            Opinions of the United
    2000 Decisions                                                                                                             States Court of Appeals
    for the Third Circuit
    10-10-2000
    Elcock v. Kmart Corp
    Precedential or Non-Precedential:
    Docket 98-7472
    Follow this and additional works at: http://digitalcommons.law.villanova.edu/thirdcircuit_2000
    Recommended Citation
    "Elcock v. Kmart Corp" (2000). 2000 Decisions. Paper 215.
    http://digitalcommons.law.villanova.edu/thirdcircuit_2000/215
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    Filed October 10, 2000
    UNITED STATES COURT OF APPEALS
    FOR THE THIRD CIRCUIT
    NO. 98-7472
    CARMELITA ELCOCK
    v.
    KMART CORPORATION, Appellant
    On Appeal From the District Court
    of the Virgin Islands
    (D.C. Civ. No. 1996/28 F)
    District Judge: Honorable Raymond L. Finch, Chief   Judge
    Argued: December 7, 1999
    Before: BECKER, Chief Judge, SCIRICA and GARTH,
    Circuit Judges.
    (Filed October 10, 2000)
    ANDREW C. SIMPSON, ESQUIRE
    (ARGUED)
    Bryant, Barnes & Simpson, P.C.
    47 King Street, 2nd Floor
    Christiansted, St. Croix
    USVI 00820
    Counsel for Appellant
    LEE J. ROHN, ESQUIRE
    MAURICE CUSICK, ESQUIRE
    K. GLENDA CAMERON, ESQUIRE
    (ARGUED)
    Law Office of Lee J. Rohn
    1101 King Street, Suite 2
    Christiansted, St. Croix
    USVI 00820
    Counsel for Appellee
    OPINION OF THE COURT
    BECKER, Chief Judge.
    This is an appeal by defendant Kmart from a judgment
    entered on a $650,000 jury verdict in favor of plaintiff
    Carmelita Elcock ("Elcock") for personal injuries and
    economic loss that she suffered as the result of a slip and
    fall at a Kmart store in Frederiksted, U.S. Virgin Islands.
    Kmart concedes its liability and acknowledges that Elcock's
    fall caused her some quantum of harm. However, Kmart
    challenges several evidentiary rulings that relate to the
    proof of Elcock's damages, and contends that the $650,000
    award, which consisted of $300,000 for pain and suffering
    and $350,000 for loss of future earnings and earning
    capacity, was excessive.
    The most important questions on appeal relate to the
    testimony of Dr. Chester Copemann, who was proffered by
    Elcock, inter alia, as an expert in vocational rehabilitation,
    and whose vocational rehabilitation presentation
    substantially informed the large award for loss of future
    earnings and earning capacity. We conclude that there
    should have been a Daubert hearing prior to the receipt of
    Copemann's testimony, and that because there was no
    such hearing, his testimony cannot stand. In the course of
    reaching this conclusion, we decide that the District Court
    did not abuse its discretion either in qualifying Copemann
    as an expert or in limiting the scope of cross-examination
    concerning Copemann's prior acts of criminal misconduct.
    With respect to the testimony of Dr. Bernard Pettingill, an
    2
    economist put on by Elcock to assess her lost future
    earnings, we conclude that his opinion should have been
    excluded because his economic model relied on
    assumptions wholly without foundation in the record. In
    the absence of the testimony of these two critical witnesses,
    and given the inability of Elcock's other witnesses to act as
    surrogates therefor, the economic loss portion of the jury
    verdict, which rests on this inadmissible evidence, must be
    set aside, and a new trial granted.
    Kmart also submits that both the economic and non-
    economic portions of the jury award were excessive and
    thus should be remitted. We do not reach Kmart's
    remittitur arguments. Because we find that the jury's
    tainted economic damage award was not clearly distinct
    and separate from the non-economic portion of its damage
    verdict, a new trial must be had on all aspects of the
    damage award. We do, however, for the guidance of the
    District Court on remand, reject Kmart's contention that
    Elcock failed to present sufficient evidence to show that her
    damages, particularly her permanent injuries, were caused
    by her slip and fall, as we are satisfied that there is
    sufficient evidence in the record to support such a finding.
    We thus affirm in part, vacate in part, and remand for a
    new trial on the issue of damages.
    I. Facts and Procedural History
    On August 12, 1995, Elcock and her husband went to
    the Frederiksted Kmart to purchase mints. While shopping,
    Elcock slipped and fell on a waxy substance that had built
    up on the floor. Elcock reported her fall to customer
    service, and a Kmart employee placed her in a wheelchair.
    Elcock told Kmart representatives that she had injured her
    back and right leg and was in excruciating pain. Kmart
    offered her the opportunity to visit a physician of her choice
    at its expense, but informed her that it would pay for only
    one visit.
    Elcock declined the offer and visited her own doctor, Dr.
    Arakere B. Prasad. Prasad diagnosed her as suffering from
    a lumbar sprain. Because Elcock complained of low back
    pain and cramps in her right leg, Prasad prescribed
    3
    painkillers for her. Elcock, however, never used the
    prescription. Prasad stated that Elcock's back and leg
    injuries would interfere with her flexibility and cause her
    pain, and that her injury was "an ongoing thing. It may be
    forever."
    Elcock sought a second opinion from an orthopedist, Dr.
    Claudius Henry. During her initial visit, four days after the
    slip and fall, Henry also diagnosed Elcock with a low back
    sprain. He found limitation in Elcock's range of motion, as
    well as tenderness and irritation in her right leg and back
    "in the right LV-3 which is lumbar third to LV-1 which is
    the paraspinal along the spine on the right side." He
    considered both symptoms to be indicative of nerve root
    irritation arising out of an injury to muscles, ligaments,
    and the outer portion of the disc area in Elcock's back.
    Henry prescribed physical therapy, x-rays, and an anti-
    inflammatory drug, and recommended that Elcock limit her
    physical activity. The x-rays revealed that she had"minimal
    spurring [i.e., the accretion of calcium deposits in] the
    anterior portion of the vertebral bodies of the lower back."
    In Henry's opinion, this preexisting condition made her
    more susceptible to suffering a low-back sprain when she
    slipped and fell.
    During a second visit, Henry diagnosed Elcock with
    resolving post-traumatic radiculopathy. Radiculopathy is
    often caused by a herniated intervertebral disc. Henry
    noted that Elcock suffered pain and nerve irritation, and
    complained of a limited range of motion in her back and
    right leg. He described these injuries as "chronic," meaning
    that they could "exist off and on for an indefinite period,"
    possibly for the rest of Elcock's life. The two visits with
    Henry took place over a span of seven months. During this
    time and in the months thereafter, Elcock also saw a Dr.
    Ali once a month; Ali had been treating her for an unrelated
    diabetes condition. As evidenced by Ali's notes, Elcock
    never made any mention of her back and leg pain to him.
    Elcock claimed that the injuries she received as a result
    of the fall profoundly impacted her life. At the time of the
    accident, Elcock was fifty-one years old and self-employed
    as a salesperson for Mary Kay Cosmetics. Elcock contended
    that she suffered extreme and uninterrupted physical pain,
    4
    as well as depression that often caused her to cry until her
    eyes became swollen. She reasoned that this depression
    arose in large part from the fact that her debilitating
    injuries affected other aspects of her life. Elcock testified
    that she had lost most of her Mary Kay business, and that,
    as a result, her income fell from the $5,744 she earned in
    1995 to $1,070 in 1996. Mary Kay sells its products
    through a force of salespeople organized in a pyramid
    structure. The salespeople earn commissions and prizes on
    their sales and the sales of those they recruit into their
    personal pyramids. Elcock was thus not only responsible
    for selling Mary Kay's products, but for recruiting and
    maintaining a subordinate sales force. She stated that her
    injuries interfered with her ability to perform all of these
    functions.
    Seventeen months after the slip and fall, Elcock visited
    Dr. Sylvia Payne, a San Juan-based specialist in physical
    medicine and rehabilitation, so that Payne might give an
    opinion as to Elcock's medical condition in relation to the
    fall for purposes of this litigation. Payne found that Elcock
    suffered from lumbar myositis (inflammation of the lower
    back muscles, characterized by pain, tenderness, and
    sometimes spasms in the affected area) and from two
    "trigger points" in the gluteus maximus muscle. Trigger
    points, according to Payne, are "very tiny point[s] in the
    muscle believed to be part of a muscle spindle that is firing
    constantly and causing pain at the sight [sic] and causing
    pain in another area not anatomically related." Payne
    testified that the trigger points were responsible for the pain
    Elcock felt radiating down her right leg to her knee. Payne
    also concluded that Elcock's "pain was severe and it
    interfered with several of her activities," that Elcock would
    be in pain for the rest of her life because of her fall, and
    that the injuries resulting from the fall were permanently
    disabling.
    Elcock was also referred to Copemann, a psychologist
    and purported expert in vocational rehabilitation. A
    vocational rehabilitationist assesses the extent of an
    individual's disability, evaluates how the disability affects
    the individual's employment opportunities, and assists the
    individual's re-entry into the labor market. Copemann
    5
    examined Elcock for the purposes of this litigation, but also
    treated her for her chronic pain. As part of his examination,
    he diagnosed Elcock's psychological condition and
    evaluated her lost earning capacity in light of her physical
    and psychological disabilities. Copemann concluded that
    Elcock suffered from depression, pain disorder, and
    adjustment disorder with anxiety, and opined that these
    symptoms were caused by her slip and fall and the physical
    injuries that arose therefrom. Copemann also concluded
    that Elcock's psychological condition was improving and
    was not permanent. Based on his assessment of Elcock's
    psychological condition, the extent of her physical injuries,
    relevant employment factors, and the results of diagnostic
    tests he had performed, Copemann opined that Elcock was
    between 50 and 60 percent vocationally disabled and that
    this disability was permanent.
    Except for Ali, all of the doctors mentioned above testified
    at Elcock's four-day jury trial, as did Elcock and her
    husband. Elcock also offered the testimony of Pettingill,
    who gave an expert opinion as to Elcock's lost earning
    capacity. The jury found for Elcock on all elements of her
    tort claim and awarded her $650,000 in damages:
    $350,000 for her economic injuries, and $300,000 for her
    pain and suffering. Kmart moved for judgment as a matter
    of law, for a new trial, or alternatively, for a remittitur. The
    District Court denied the motion for judgment as a matter
    of law and for a new trial, but did remit the pain and
    suffering award to $115,000. Upon Elcock's motion for
    reconsideration, however, the Court vacated the remittitur
    and reinstated the jury's damage award. The District Court
    had jurisdiction under 28 U.S.C. S 1332. We have appellate
    jurisdiction pursuant to 28 U.S.C. S 1291.
    II. The Evidentiary Issues Relating to Copemann's
    Qualifications
    Before trial and again during trial, Kmart sought to
    exclude Copemann's vocational rehabilitation testimony on
    the grounds that he was not qualified as an expert in the
    field. The District Court conducted a voir dire on
    Copemann's qualifications, during which Copemann
    testified regarding his credentials, and Kmart's vocational
    6
    rehabilitation expert gave testimony that called those
    credentials into question. The District Court considered the
    qualifications issue raised by Kmart a "close call," but
    ultimately found that Copemann was qualified to testify
    about vocational rehabilitation.1 Kmart challenges this
    decision. We review the District Court's decision to qualify
    Copemann for abuse of discretion. See Waldorf v. Shuta,
    
    142 F.3d 601
    , 627 (3d Cir. 1998).
    A.
    Federal Rule of Evidence 702, rescribed in the margin,
    governs the use of expert testimony in the federal courts.2
    As explained in In re Paoli R.R. Yard PCB Litig. , 
    35 F.3d 717
    (3d Cir. 1994) (hereinafter "Paoli II"), Rule 702 embodies
    three distinct substantive restrictions on the admission of
    expert testimony: qualifications, reliability, andfit. See 
    id. at 741-43.
    Before an expert witness may offer an opinion
    pursuant to Rule 702, he must first be qualified by virtue
    of specialized expertise. See 
    id. at 741.
    In Waldorf v. Shuta,
    
    142 F.3d 601
    (3d Cir. 1998), we articulated the standard
    for qualifying an expert:
    Rule 702 requires the witness to have "specialized
    knowledge" regarding the area of testimony. The basis
    of this specialized knowledge "can be practical
    experience as well as academic training and
    credentials." We have interpreted the specialized
    knowledge requirement liberally, and have stated that
    this policy of liberal admissibility of expert testimony
    _________________________________________________________________
    1. Copemann also testified about the physical and psychological harm
    that Elcock suffered as a result of her slip and fall. In light of the
    fact
    that Copemann is a formally trained and experienced psychologist,
    Kmart does not challenge his qualifications to render this opinion.
    2. The Rule provides that
    [i]f scientific, technical, or other specialized knowledge will
    assist the
    trier of fact to understand the evidence or to determine a fact in
    issue, a witness qualified as an expert by knowledge, skill,
    experience, training, or education, may testify thereto in the form
    of
    an opinion or otherwise.
    Fed. R. Evid. 702.
    7
    "extends to the substantive as well as the formal
    qualification of experts." However, "at a minimum, a
    proffered expert witness . . . must possess skill or
    knowledge greater than the average layman. . . ."
    
    Id. at 625
    (citations omitted).
    Even under the liberal standard described in Waldorf,
    Copemann's qualifications as a vocational rehabilitationist
    are thin. In contending that Copemann possessed skill or
    knowledge "greater than the average layman," Elcock
    focuses primarily on Copemann's experience. Specifically,
    Elcock points to (1) Copemann's general training in
    "assessing" individuals, which he received while earning his
    Ph.D. in psychology; (2) his experience, twenty years
    previous, helping drug addicts reenter the workforce; (3) his
    experience primarily in the last two years dealing with the
    Virgin Islands Division of Workers' Compensation, which he
    had advised regarding the ability of approximatelyfifty to
    sixty-five disabled employees to return to their previous
    jobs; (4) his past experience as an expert witness making
    lost earning capacity assessments; (5) his attendance at two
    seminars regarding vocational rehabilitation, and his stated
    familiarity with the literature in the area; (6) his
    membership in two vocational rehabilitation organizations,
    both of which place no restrictions on membership; and (7)
    the fact that when Copemann was in school, a degree in
    vocational rehabilitation therapy was not available, but that
    he received similar training nonetheless. This last fact,
    Elcock argues, explains why Copemann did not possess the
    degrees or formal training one would ordinarily associate
    with an expert.
    In response, Kmart emphasizes several factors that
    significantly undermine Copemann's purported
    qualifications. First, during Kmart's voir dire, Copemann
    admitted that he had neither the academic training nor the
    standard credentials that would ordinarily qualify one as an
    expert in vocational rehabilitation. Moreover, Kmart argues
    that nothing prevented Copemann from either receiving
    formal training in vocational rehabilitation after he left
    school or from earning a related degree or certificate while
    he was in school. Second, Copemann conceded that his
    experience dealing with the workers' compensation board
    8
    consisted primarily of diagnosing whether patients were so
    disabled that they could not return to a particular job; this
    experience did not include assessing what range of jobs
    those injured individuals were capable of performing. Third,
    Kmart adduced evidence suggesting that not only was
    Copemann's experience as a counselor for drug addicts
    dated, but that it did not include performing assessments
    of which jobs the recovered addicts would be able to
    perform. Fourth, although Copemann maintained that there
    was no difference between a psychologist and a vocational
    rehabilitationist, Kmart's vocational rehabilitation therapist
    testified that despite a common psychological diagnostic
    component in both jobs, the vocational rehabilitationist's
    expertise entails a distinct speciality: the capacity to
    "translate" psychological and physical impairments into the
    "ability to work, earn income, [and] get a job . . . ."3
    Kmart's forceful argument all but persuaded the District
    Court. Given Copemann's lack of credentials and limited
    experience, the District Court twice expressed its reluctance
    to qualify Copemann as an expert in vocational
    rehabilitation. However, after two attempts by Elcock's
    counsel to qualify him, the Court eventually admitted
    Copemann's testimony. The Court relied heavily on the fact
    that a formal degree in vocational rehabilitation therapy
    was not available when Copemann attended school, and the
    fact that the training of psychologists was functionally
    similar to that of vocational rehabilitationists at the time.
    The Court also relied on Copemann's practical experience
    evaluating the ability of injured employees to return to
    work.
    _________________________________________________________________
    3. In support of this latter point Kmart cites Terry v. Mathews, 427 F.
    Supp. 464 (E.D. Pa. 1976), in which the district court remanded an
    administrative law judge's ("ALJ") decision to deny a social security
    claimant benefits because the ALJ gave great weight to the vocational
    rehabilitation opinion of a trained psychologist with "some limited
    experience in occupational therapy and counseling." 
    Id. at 466.
    The
    district court reasoned that "the issue here is not a psychological one.
    Rather it is a question of expertise in the vocational field. . . . [I]n
    light
    of [the expert's] qualifications as a psychologist, as opposed to any
    qualifications as a vocational expert, [the heavy weight given the
    expert's
    testimony] is impermissible." 
    Id. 9 B.
    This court has had, for some time, a generally liberal
    standard of qualifying experts. See, e.g., Paoli 
    II, 35 F.3d at 741
    ; Hammond v. International Harvester Co., 
    691 F.2d 646
    , 652-53 (3d Cir. 1982); Knight v. Otis Elevator Co., 
    596 F.2d 84
    , 87-88 (3d Cir. 1979). However, we have also set a
    floor with respect to an expert witness's qualifications. For
    example, in Aloe Coal Co. v. Clark Equipment Co. , 
    816 F.2d 110
    (3d Cir. 1987), we held that a district court abused its
    discretion in allowing a tractor sales representative to
    testify as an expert regarding the cause of a tractor fire. See
    
    id. at 114.
    In making this determination we stated:
    Drewnoski [the expert witness] was not an engineer. He
    had no experience in designing construction
    machinery. He had no knowledge or experience in
    determining the cause of equipment fire. He had no
    training as a mechanic. He had never operated
    construction machinery in the course of business. He
    was a salesman, who at times prepared damage
    estimates.
    
    Id. (citations omitted);
    see also 
    Waldorf, 142 F.3d at 625
    ("Even though we apply Rule 702 liberally, we have not
    pursued a policy of qualifying any proffered witness as an
    expert.").
    Our decision in Waldorf provides guidance for our
    assessment of Copemann's qualifications. In Waldorf, the
    district court qualified an expert with credentials similar to
    Copemann's, and we affirmed that decision on appeal:
    The district court qualified Rizzo [the putative expert]
    to testify as a vocational expert in spite of his lack of
    any formal training in that field, and notwithstanding
    that his educational training culminated in a master's
    degree in sociology and social organization from
    Rutgers University in 1973. . . .
    . . . In 1991, he became involved in the Council's
    administration of a million dollar loan pool to assist
    disabled New Jersey residents in starting their own
    businesses. In that capacity, Rizzo evaluated the
    capacity of disabled individuals to accomplish specific
    10
    employment opportunities. Rizzo also testified that,
    through the course of his employment, he became
    familiar with studies on the work that quadriplegics
    can perform. Furthermore in his job experience, Rizzo
    utilized the New Jersey Department of Labor Statistics
    and the New Jersey Job Listing Book, which indicate
    employment opportunities available in various job
    categories in New Jersey. Thus, based on his
    experience and his familiarity with the literature in the
    field, the district court held that Rizzo was qualified
    properly as a vocational expert. The court said that
    "[w]hile his formal credentials may be a little thin, he
    certainly had sufficient substantive qualifications to be
    considered an expert under the liberal standard of Rule
    702.
    
    Id. at 626
    (citations omitted).
    What drove the Waldorf panel's decision to affirm on this
    issue was not the impressiveness of Rizzo's credentials or
    experience, but the standard of review governing our review
    of Rule 702 qualification rulings:
    Waldorf has a heavy burden in challenging this
    decision because, absent an abuse of discretion, we
    will not substitute our own judgment for that of the
    trial court regarding the admission or exclusion of
    expert testimony. Of course, an abuse of discretion
    means much more than that the appellate court
    disagrees with the trial court. Rather, a trial court's
    determination whether to admit or exclude expert
    testimony will be upheld "unless manifestly erroneous."
    . . . Even though Rizzo did not possess formal
    academic training in the area of vocational
    rehabilitation, he did have experience in the field
    through his employment at the Developmental
    Disabilities Council in attempting to provide jobs for
    disabled individuals. During this time, Rizzo also
    became familiar with the relevant literature in thefield.
    Even if his qualifications are, as the district court
    described, "a little thin," he has substantially more
    knowledge than an average lay person regarding
    employment opportunities for disabled individuals. In
    11
    the circumstances, we cannot say that the district
    court abused its discretion in determining that Rizzo
    possessed the minimum qualifications necessary to
    testify as an expert.
    
    Id. at 626
    -27 (citations omitted).
    Copemann, like Rizzo, has no formal training in
    vocational rehabilitation and Elcock must therefore rely on
    Copemann's practical experience to demonstrate that he
    "possessed the minimum qualifications necessary to testify
    as an expert." 
    Id. at 627.
    In support of Copemann's
    qualifications, Elcock points to Copemann's experience in
    helping drug addicts return to employment and to his work
    with the Virgin Islands Division of Workers' Compensation.
    Based on this background, one can presume that
    Copemann has learned about the difficulties disabled
    individuals face in employment, and has accumulated some
    experience in evaluating whether they can return to a
    particular job. Nonetheless, the most fundamental problem
    with Copemann's experience in this area is that he seems
    most qualified to testify on a micro-level regarding the
    ability of a disabled individual to return to a specific job; he
    does not appear particularly qualified to testify on the
    macro-level regarding the number of jobs in the national or
    local economy that the disabled individual is able to
    perform.
    On the other hand, Copemann claims to have kept
    abreast of the relevant literature in his field, and to have
    consulted the Dictionary of Occupational Titles, a standard
    tool of the vocational rehabilitationist.4 In addition,
    Copemann possesses a degree in a field tangentially related
    to the one about which he testified, and he has also
    attended conferences regarding vocational rehabilitation.
    Finally, in the process of testifying as an expert in similar
    matters, Copemann has no doubt performed his brand of
    _________________________________________________________________
    4. The DOT describes "the majority of occupations" in the economy, 1
    U.S. Dep't of Labor, Dictionary of Occupational Titles iii (4th ed. 1991)
    (Message from the Secretary of Labor), as well as the hazards
    accompanying those jobs, see, e.g., Adorno v. Shalala, 
    40 F.3d 43
    , 47 (3d
    Cir. 1994), and is often used by vocational rehabilitationists to assess
    what jobs are available to disabled employees.
    12
    vocational rehabilitation assessments.5 Though his efforts
    in this regard are not grounded in formal training, when
    taken together with his review of the literature in the field
    and his attendance at conferences, we must acknowledge
    that he has "substantially more knowledge than an average
    lay person regarding employment opportunities for disabled
    individuals." 
    Id. at 627.
    We consider Waldorf to be at the outer limit of this
    court's generally liberal approach to reviewing the
    qualifications of experts. We also suspect that, had the
    district court in Waldorf ruled the witness unqualified, the
    panel would have affirmed. While Copemann seems but
    marginally qualified to perform a vocational rehabilitation
    assessment, and a district judge would be free to decline to
    qualify him, we recognize that Copemann's qualifications
    fall within Waldorf's outer bounds. Despite misgivings,
    because we are not prepared to say that the District Court,
    acting "on the spot" and exercising considerable care in its
    approach to this question, abused its discretion, we will
    affirm the Court's decision to qualify Copemann as an
    expert. We note, however, that the marginal nature of
    Copemann's qualifications does enter into the Daubert
    calculus, to which we now turn.
    III. The Daubert Reliability of Copemann's Testimony
    During trial and again on appeal, Kmart sought to
    exclude Copemann's testimony on the ground that his
    methodology for rendering vocational disability assessments
    was unreliable. Kmart repeatedly requested that the District
    Court conduct a Daubert hearing regarding Copemann's
    methods as a vocational rehabilitationist. The District Court
    _________________________________________________________________
    5. We note that the mere fact that Copemann was previously admitted as
    an expert witness qualified to give testimony on vocational rehabilitation
    is irrelevant to the determination whether he is qualified to give such
    testimony in this case. See Thomas J. Kline, Inc. v. Lorillard, Inc., 
    878 F.2d 791
    , 800 (4th Cir. 1989) ("[I]t would be absurd to conclude that one
    can become an expert simply by accumulating experience in testifying.").
    Moreover, while any expertise he may have gained in performing
    vocational rehabilitation assessments in these cases would be relevant,
    the crucible of litigation makes for a poor classroom.
    13
    denied this request, stating that it "didn't look at"
    Copemann's vocational rehabilitation opinion "as a Daubert
    issue." Although we hold that the District Court erred in
    not granting a Daubert hearing, we acknowledge that the
    Court's refusal to do so is understandable, as the Court's
    decision was rendered before the Supreme Court's opinion
    in Kumho Tire Co., Ltd. v. Carmichael, 
    526 U.S. 137
    (1999),
    extended the rigorous gatekeeping function assigned to trial
    judges by Daubert v. Merrell Dow Pharmaceuticals, Inc., 
    509 U.S. 579
    (1993), to cases involving non-scientific testimony.
    See 
    Kumho, 526 U.S. at 141
    .
    A.
    In Daubert, the Supreme Court directed district court
    judges to perform a screening function, to insure that
    evidence presented by expert witnesses is relevant, reliable,
    and helpful to the jury's evaluation of such evidence. See
    
    Daubert, 509 U.S. at 597
    . Our precedent initially limited
    Daubert's command to cases involving scientific testimony.
    For instance, in In re Unisys Savings Plan Litigation, 
    173 F.3d 145
    , 157 (3d Cir. 1999), cert. denied sub nom.,
    Meinhardt v. Unisys Corp., 
    120 S. Ct. 372
    (1999), we stated
    that non-scientific testimony (such as Copemann's)"does
    not fall within the scope of scientific testimony, and
    accordingly, it should not be tested by the particular
    standards required for testimony based on a particular
    scientific ethic." 
    Id. at 157.
    It was not until Kumho Tire that
    the Supreme Court made clear that Daubert's gatekeeping
    obligation covered not only scientific, but also non-
    scientific, testimony. See Kumho 
    Tire, 526 U.S. at 151
    (rejecting the "Eleventh Circuit's holding that a trial judge
    may ask questions of the sort Daubert mentioned only
    where an expert `relies on the application of scientific
    principles,' but not where an expert relies `on skill- or
    experience-based observation' ") (citation omitted).
    Although we would ordinarily review a district court's
    application of Rule 702, as well as the decision whether to
    grant a Daubert hearing, for abuse of discretion, see Kumho
    
    Tire, 526 U.S. at 142
    , 152, our standard of review is
    somewhat different in this case. Because we are evaluating
    the District Court's legal interpretation of a federal rule, our
    14
    review is plenary. See In re Paoli R.R. Yard PCB Litigation,
    No. 99-1692, 
    2000 WL 1137475
    , at *6 (3d Cir. Aug. 10,
    2000). As will appear, a review of Copemann's vocational
    rehabilitation testimony demonstrates the significant
    reliability questions raised by his methodology and compels
    the conclusion that a Daubert hearing would have
    permitted a fuller assessment of Copemann's analytical
    processes and thus was a necessary predicate for a proper
    determination as to the reliability of Copemann's methods.
    See Padillas v. Stork-Gamco, Inc., 
    186 F.3d 412
    , 417-18 (3d
    Cir. 1999) (holding that the district court abused its
    discretion in excluding an expert's opinion without
    conducting an in limine hearing focused on the Daubert
    reliability of his testimony). "When a [district] court . . .
    misapprehends [the] bounds" of a federal rule, "it abuses its
    discretion." 
    Id. (citing Koon
    v. United States, 
    518 U.S. 81
    ,
    100 (1996)); cf. Kumho 
    Tire, 526 U.S. at 159
    (Scalia, J.,
    concurring) ("Though, as the Court makes clear today, the
    Daubert factors are not holy writ, in a particular case the
    failure to apply one or another of them may be
    unreasonable, and hence an abuse of discretion."). In
    fairness, we note that, because he was without the benefit
    of Kumho Tire, the District Judge understandably
    misapprehended the bounds of Rule 702's gatekeeping
    requirement. Kumho Tire, however, must be applied.
    B.
    An expert's opinion is reliable if it is " `based on the
    `methods and procedures of science' rather than on
    `subjective belief or unsupported speculation'; the expert
    must have `good grounds' for his or her belief." Paoli 
    II, 35 F.3d at 742
    (quoting 
    Daubert, 509 U.S. at 589
    ). In cases
    involving scientific testimony, "[the] inquiry into the
    reliability of scientific evidence . . . requires a determination
    as to its scientific validity." 
    Id. (citation omitted).
    "Daubert suggests several factors that a district court
    should take into account in evaluating whether a particular
    scientific methodology is reliable . . . ." 
    Id. The factors
    that
    Daubert and this Court have already declared important
    include:
    15
    (1) whether a method consists of a testable hypothesis;
    (2) whether the method has been subject to peer
    review; (3) the known or potential rate of error; (4) the
    existence and maintenance of standards controlling the
    technique's operation; (5) whether the method is
    generally accepted; (6) the relationship of the technique
    to methods which have been established to be reliable;
    (7) the qualifications of the expert witness testifying
    based on the methodology; and (8) the non-judicial
    uses to which the method has been put.
    
    Id. at 742
    n.8 (citing Daubert and United States v. Downing,
    
    753 F.2d 1224
    , 1238-41 (3d Cir. 1985), as the source of
    those non-exclusive factors). We will henceforth refer to
    these factors as the Daubert factors.
    Kumho Tire makes clear that this list is non-exclusive
    and that each factor need not be applied in every case. As
    noted above, it also resolves the question whether these
    same factors should be applied when testing the reliability
    of a non-scientific method:
    Daubert's gatekeeping requirement. . . . make[s] certain
    that an expert, whether basing testimony upon
    professional studies or personal experience, employs in
    the courtroom the same level of intellectual rigor that
    characterizes the practice of an expert in the relevant
    field. . . . [T]he trial judge must have considerable
    leeway in deciding in a particular case how to go about
    determining whether particular expert testimony is
    reliable. That is to say, a trial court should consider
    the specific factors identified in Daubert where they are
    reasonable measures of the reliability of expert
    testimony.
    Kumho 
    Tire, 526 U.S. at 152
    ; see also 
    id. at 158-59
    (Scalia,
    J., concurring) ("I join the opinion of the Court, which
    makes clear that the discretion it endorses--trial-court
    discretion in choosing the manner of testing expert
    reliability--is not discretion to abandon the gatekeeping
    function.").
    Kmart accepts that vocational rehabilitation expertise
    flows from a valid non-scientific method; it disputes,
    however, the reliability of Copemann's particular
    16
    methodology. Kmart points to a number of instances in
    which application of the Daubert factors would weigh
    against the reliability of Copemann's methods.
    1.
    Kmart first contends that Copemann's method can be
    described, in essence, as an idiosyncratic or subjective
    judgment in which the result can neither be duplicated nor
    tested for validity (implicating by rough analogy, and for
    reasons explained below in this Section, the first and fourth
    Daubert factors, see Paoli 
    II, 35 F.3d at 742
    n.8). Given the
    lack of a Daubert hearing, we must turn to Copemann's
    trial testimony in order to identify and evaluate the
    processes Copemann employed in making the disability
    determination in Elcock's case. On direct examination,
    Copemann described his method for arriving at the 50 to 60
    percent disability opinion he rendered:
    My vocational assessment consisted of testing Mrs.
    Elcock for intelligence level achievement, that is school
    level, getting a work history on her and then doing an
    analysis of the Dictionary of Occupational Titles
    aptitude testing on her, and then doing a search of the
    Dictionary of Occupational Titles.
    . . .
    [In addition to a clinical interview,] I performed the
    [Wechsler] Adult Intelligence Scale revised and she had
    an IQ of 98 which is in the normal or average range.
    And I also performed the wide range achievement test
    revised which indicated that she had a reading level of
    above 12th grade level, spelling level of beginning 10th
    grade, and an arithmetic level of ending 6th grade.
    . . .
    Then I performed the aptitude testing on her, and I
    think we need to, I need to explain the aptitude test.
    Each job in the United States is categorized in this
    Dictionary of Occupational Titles put out by the U.S.
    Department of Labor and the characteristics of those
    jobs. Those jobs are listed, characterized and listed for
    each job, and every job has a set of aptitudes that tells
    17
    you what is needed or what are needed in order to be
    able to do those jobs. And there are tests that you can
    give to determine what a person's aptitude are for
    doing a particular job.
    Copemann further testified that he also assessed which
    jobs were available in the local job market by reviewing the
    job listings his office receives weekly from the Virgin Islands
    labor department, and by searching a database his office
    creates of jobs listed in the local newspapers within the
    prior two months. He then stated that he "took into
    consideration [Elcock's] physical injuries and. . . her
    psychological impairments," and, in sum, concluded that
    he "rated [Elcock's] capacity after [he] had done all the
    analysis as somewhere between 50 and 60 percent."
    When asked by Elcock's counsel to describe his
    methodology, Copemann testified as follows:
    You take into comparison her education, her
    intelligence, her aptitude, her previous work experience
    and her medical injuries, what she says, she would like
    to do, what her desires are as a person, her
    temperaments, whether she likes working by herself or
    she likes working with groups of people, whether she
    likes working on detailed stuff or she doesn't like
    working on detailed things because those are
    important, and her limitations as she states them, not
    only the medical findings but her limitations as she
    states them. So when you take all of those things
    together the closest I could come to it as a 50 to 60
    percent disability.
    . . .
    [What that disability means] is that she is at a
    disadvantage when she goes out into the labor market
    because she's going to be competing with healthier
    individuals and she's going to be competing with
    [non-]impaired individuals.
    On cross-examination, Kmart made several attempts to
    have Copemann explain how he arrived at the 50 to 60
    percent figure other than his ipse dixit statement that the
    consideration of these factors produced these numbers.
    18
    Kmart pointed out that, before trial, Copemann had
    diagnosed Elcock's disability at 50 to 75 percent, and asked
    him to explain the discrepancy. Other than to state that his
    initial "estimate was too broad," Copemann did not explain
    why the range changed by 15 percent. Though Kmart might
    have conducted a more thorough cross-examination of
    Copemann on this point, a Daubert hearing would have
    afforded a far greater opportunity to probe the particulars
    of how Copemann arrived at specific disabilityfigures,
    without running the risk of boring or "turning off " the jury.
    Moreover, because Copemann never explained his method
    in rigorous detail, it would have been nearly impossible for
    Kmart's experts to repeat Copemann's apparently subjective
    methods, or, in the nomenclature of Paoli II, to find that his
    "method consists of a testable hypothesis" for which there
    are "standards controlling the technique's 
    operation." 35 F.3d at 742
    n.8.
    As suggested above, we can only roughly analogize to
    these two Daubert factors when reviewing the non-scientific
    evidence presented by Copemann. Vocational rehabilitation
    is a social science that does not exactly mirror the
    fundamental precepts of the so-called harder sciences.
    However, the gist of the above Daubert factors are
    nonetheless implicated in this case. Just as a scientist
    would want to duplicate the outcome when evaluating a
    colleague's claim that he had developed a technique for cold
    fusion, a vocational rehabilitationist assessing Copemann's
    disability determination would want to test the underlying
    hypotheses and review the standards controlling the
    technique's operation in an attempt to reproduce the
    results originally generated.
    If such testing did not generate consistent results,
    Copemann's method would be exposed as unreliable
    because it is subjective and unreproducible. Moreover,
    without an inkling as to the standards controlling
    Copemann's method--i.e., how he excludes for other
    variables, such as Elcock's pre-existing injuries or job
    limitations--an expert trying to reproduce Copemann's
    methods would be lost. Because Elcock had neither the
    need nor the opportunity to test Copemann's methods in
    this manner, on the present record we conclude that the
    19
    first and fourth Daubert factors suggest that Copemann's
    method was unreliable and therefore his opinion would not
    "assist the trier of fact to understand the evidence or to
    determine a fact in issue . . . ." Fed R. Evid. 702.
    2.
    Kmart's second argument is based on the fact that
    Copemann admits that he employed an untested, novel
    method for performing vocational rehabilitation
    assessments that was based on an arbitrary admixture of
    two widely used methods. This contention implicates the
    fifth and sixth Daubert factors: "(5) whether the method is
    generally accepted; [and] (6) the relationship of the
    technique to methods which have been established to be
    reliable . . . ." Paoli 
    II, 35 F.3d at 742
    n.8.
    Given the absence of a full Daubert hearing, our exposure
    to the mechanics of Copemann's admittedly unique
    methodological approach to vocational disability
    assessment is limited to the brief description Copemann
    offered at trial. On cross examination, Kmart asked
    Copemann to explain the basis of his method and how he
    arrived at a disability rating of 50 to 60 percent. Copemann
    testified as follows:
    I use a combination of the procedure recommended
    by Fields which is to look at level of preinjury access to
    the labor market and post injury access and the
    percentage and the difference between those
    percentages Fields says is the loss of jobs or the lost
    percentage.
    I also looked at which is what I normally do at the
    procedure recommended by Anthony Gamboa and he
    suggests that you look at all the factors involved in the
    client's analysis, injury, test results, psychological
    results, the client's statements, and so on, and then
    you as the clinician must make a, you as a vocational
    expert must make an estimate. And so what I do is I
    use Fields analysis as a starting point and then I revert
    to Gamboa to depart from Fields to come up with an
    estimate.
    20
    Kmart does not dispute that the Fields and Gamboa
    approaches are accepted methodologies in the vocational
    rehabilitation field; what it does challenge is Copemann's
    combination method. Each approach, taken in isolation,
    may very well contain sufficient analytical rigor to be
    deemed reliable. However, we are inclined to view
    Copemann's admittedly novel synthesis of the two
    methodologies as nothing more than a hodgepodge of the
    Fields and Gamboa approaches, permitting Copemann to
    offer a subjective judgment about the extent of Elcock's
    vocational disability in the guise of a reliable expert opinion.6
    Moreover, like the plaintiff in Kumho Tire, Elcock not only
    failed to introduce evidence that the particular admixture of
    these two methods by Copemann was "generally accepted,"
    as required by Daubert's fifth factor, but she also did not
    demonstrate that this hybrid approach bore a logical
    relationship to the Fields and Gamboa techniques, methods
    that had been "established to be reliable," as required by
    Daubert's sixth factor. Paoli 
    II, 35 F.3d at 742
    n.8. What is
    at issue here bears a remarkable similarity to the situation
    in Kumho Tire, in which the Court wrote that
    nor does anyone deny that, as a general matter, tire
    abuse may often be identified by qualified experts
    through visual or tactile inspection of the tire. As we
    said before, the question before the trial court was
    specific, not general. . . .
    The particular issue in this case concerned the use
    of Carlson's [the plaintiff 's expert] two-factor test and
    _________________________________________________________________
    6. An argument could perhaps be made that Copemann's method
    represents a cross-checking approach that applies the learning of two
    accepted methods. In different circumstances, we have opined that there
    is nothing wrong with cross-checking the results of two accepted
    methods to insure that the outcomes at which one is arriving are
    reliable. See Gunter v. Ridgewood Energy Corp. , No. 00-5053, 
    2000 WL 1038142
    , at *4 n.1 (3d Cir. July 27, 2000) (recommending that in
    awarding attorneys' fees "courts cross-check the percentage award at
    which they arrive against the `lodestar' award method"). We are doubtful
    that such a generous characterization is appropriate for Copemann's
    combination method, but the parties can seek to have that issue
    resolved at the Daubert hearing on remand.
    21
    his related use of visual/tactile inspection to draw
    conclusions on the basis of what seemed small
    observational differences. We have found no indication
    in the record that other experts in the industry use
    Carlson's two-factor test or that tire experts such as
    Carlson normally make the very fine distinctions about,
    say, the symmetry of comparatively greater shoulder
    tread wear that were necessary, on Carlson's own
    theory, to support his conclusions. Nor, despite the
    prevalence of tire testing, does anyone refer to any
    articles or papers that validate Carlson's approach.
    . . . . Of course, Carlson himself claimed that his
    method was accurate, but, as we [have] pointed out
    . . ., "nothing in either Daubert or the Federal Rules of
    Evidence requires a district court to admit opinion
    evidence that is connected to existing data only by the
    ipse dixit of the 
    expert." 526 U.S. at 156-57
    (citations omitted). Elcock did not
    introduce evidence that Copemann's combination method
    was either used by other experts or even referenced in the
    vocational rehabilitation literature. Moreover, aside from
    the brief statement that he used the Gamboa approach to
    depart from the Fields approach, Copemann offered no
    explanation as to how his hybrid methodology could be
    rationally derived from the application of the two accepted
    techniques. Thus, we conclude that the fifth and sixth
    Daubert factors militate in favor of excluding Copemann's
    testimony.
    3.
    Third, Kmart points to Copemann's thin qualifications to
    cast doubt on the reliability of his vocational
    rehabilitationist opinion. As we made clear in Paoli II, an
    expert's "level of expertise may affect the reliability of the
    expert's 
    opinion." 35 F.3d at 741
    ; see also 
    id. at 742
    n.8
    (listing this element as the seventh Daubert factor). In light
    of our substantial discussion in Section II explaining how
    Copemann's qualifications are marginal at best, and
    mindful of the District Court's statement that the question
    of Copemann's qualifications was a "close call," we believe
    22
    that this factor also weighs in favor of excluding
    Copemann's testimony.
    4.
    Finally, we note that Copemann's application of the
    hybrid method he describes appears unreliable on its face.
    On direct examination, Copemann testified that"with or
    without her disabilities," given the jobs available in the
    Virgin Islands, "the only job that [Elcock] could really
    possibly go back to do . . . if she gets motivated enough"
    would be with Mary Kay. "Given . . . her present condition,"
    however, Copemann testified that Elcock is "[n]ot now
    [capable]" of meeting the requirements for work as a Mary
    Kay representative. If Copemann had actually employed the
    Fields method as he described it, Copemann would have
    had to conclude that Elcock was 100 percent disabled.
    According to Copemann, a vocational rehabilitationist
    employing the Fields methodology arrives at a job loss
    percentage by comparing the difference between "preinjury
    access to the labor market" and "post injury access."
    Taking Copemann's testimony at face value, Elcock was
    qualified for only one job in the Virgin Islands before her
    injury, and no jobs afterwards. As a matter of "percentage"
    her "loss of jobs" was 100 percent.
    Copemann also said nothing to clarify why an application
    of the Gamboa method would have halved this disability
    estimate, as it must have if Copemann ultimately
    concluded that Elcock was between 50 and 60 percent
    disabled. Nor, looking at Copemann's description of his
    methodology, does it seem that a reasonable explanation
    could be provided. Given the disconnect between the stated
    nature of these methods and the results they produced
    when the facts of the instant case were plugged into their
    machinery, we hesitate to say that Copemann's method is
    a reliable one. Though this inconsistency would normally go
    to the weight a jury would give Copemann's testimony, in
    this case the discord is so stark that we factor it into our
    Daubert calculus. Perhaps this inconsistency could be
    sufficiently clarified, but at this juncture, a Daubert hearing
    is the proper forum for such an elucidation. Cf. 
    Padillas, 186 F.3d at 418
    (stating that a district court may abuse its
    23
    discretion in failing to conduct a Daubert hearing "when the
    ruling on admissibility turns on factual issues").
    Thus, on balance, given the serious doubts raised by
    Kmart regarding Copemann's methods, and in light of
    Elcock's failure to adduce much evidence validating his
    methods, we feel compelled both to vacate the District
    Court's decision to admit Copemann's testimony and to
    remand for a Daubert hearing on this issue. We express no
    opinion as to the outcome of this hearing. On remand,
    Elcock will have an opportunity to substantiate the bases
    underlying Copemann's opinion, and Kmart will have an
    opportunity to impeach or undermine them.7
    C.
    Lastly, we offer some guidance for remand concerning the
    appropriate role that the challenge to Copemann's
    credibility is to play in the Daubert calculus. We note that
    in reaching our conclusion about the reliability of
    Copemann's methods, we do not consider evidence
    regarding Copemann's credibility, or his alleged character
    for untruthfulness.
    During trial, in an effort to impeach Copemann's
    character for truthfulness and to blunt the force of his
    testimony, Kmart sought to question Copemann about the
    fact that he had engaged in acts of criminal misconduct
    involving dishonesty or false statements. Kmart offered to
    prove that Copemann and the corporation for which he
    served as chief executive officer, Caribbean Behavioral
    Institute, Inc. (CBI), had pled guilty to violating 18 U.S.C.
    S 641, which prohibits "embezzl[ing] . . . or knowingly
    converting to [one's] use . . . any property made or being
    made under contract for the United States . . . ." Kmart
    sought to question Copemann about the fact that he and
    CBI had misappropriated $331,000 from the federal
    government.
    _________________________________________________________________
    7. We note that, on remand, the District Court need not conduct a
    Daubert hearing regarding Copemann's ability to testify regarding
    Elcock's psychological harms. The parties do not contest his
    qualifications to render, or his methods for rendering, such an opinion.
    24
    The fact that Copemann and CBI pled guilty to
    embezzlement and knowing conversion of federal property
    arguably casts doubt on his credibility as a witness, and
    could--under an overly expansive reading of our
    jurisprudence--be an appropriate Daubert factor to weigh
    when adjudging reliability. In In re Unisys Savings Plan
    Litigation, 
    173 F.3d 145
    (3d Cir. 1999), cert. denied sub
    nom., Meinhardt v. Unisys Corp., 
    120 S. Ct. 372
    (1999),
    over a strong dissent by the author of this opinion, a panel
    of this court affirmed a district court's decision not to admit
    the testimony of an expert witness, based in part on the
    fact that the district court found the expert to be not
    credible. See 
    id. at 158.
    In support of its conclusion, the
    majority contended that the district court could properly
    take into account the expert witness's credibility--and was
    not limited to assessing the reliability of the expert's
    methodology under the Rule 702 Daubert framework--
    because the expert's "testimony [did] not fall within the
    scope of scientific testimony, and accordingly, it should not
    be tested by the particular standards required for testimony
    based on a particular scientific ethic." 
    Id. at 157
    (second
    emphasis added).
    Insofar as In re Unisys relied on the now-rejected
    distinction between scientific and non-scientific testimony,
    this part of the majority's opinion was cast into doubt by
    Kumho Tire. Moreover, In re Unisys explicitly limited its
    holding to bench trials, in which "the role of the gatekeeper
    to admit or exclude evidence . . . and the role of the fact
    finder to assess and weigh the evidence that was admitted
    . . . are one and the same . . . 
    ." 173 F.3d at 158
    . The case
    at bar was not a bench trial and thus, even assuming that
    In re Unisys's holding is still good law, Copemann's
    credibility is and was an issue solely within the province of
    the jury that could neither be considered by the District
    Court when performing its Rule 702 analysis, nor by this
    Court in reviewing that analysis. We thus decline to apply
    In re Unisys here. On remand, therefore, the District Court
    should not consider Copemann's likely credibility as a
    witness when assessing the reliability of his methods.8
    _________________________________________________________________
    8. We note, in addition, that In re Unisys 's holding regarding the
    ability
    of a trial court to factor credibility into the reliability analysis--
    especially
    25
    IV. The Scope of Kmart's Cross-Examination
    Regarding Copemann's Character for
    Untruthfulness
    The fact that Copemann and CBI pled guilty to violating
    18 U.S.C. S 641 became an issue in the litigation between
    Elcock and Kmart in another respect. During trial, Kmart
    sought to introduce evidence (i) of the fact that Copemann
    and CBI had pled guilty to violating 18 U.S.C. S 641, and (ii)
    that would provide further details about Copemann's and
    CBI's misconduct, including the fact that their crime
    consisted of misappropriating $331,000 from the federal
    government. Kmart also wanted to cross-examine
    Copemann based on the extensive findings of fact made by
    the District Court in describing Copemann's and CBI's
    misdeeds when sentencing the two in the S 641
    prosecution. See United States v. Caribbean Behavioral
    Inst., Crim. No. 99-0012, at 1-14 (D.V.I. Aug. 15, 1997).
    However, in ruling on an in limine motionfiled by Elcock,
    the District Judge, who also presided over the criminal case
    against Copemann, forbade questions regarding the amount
    that Copemann and CBI had embezzled, as well as about
    the facts and circumstances underlying these crimes,
    holding that such questions would be cumulative and
    would add nothing to Kmart's attempt to impeach
    Copemann's veracity. See Elcock v. Kmart Corp. , Civ. No.
    1996-0028F, at 5 (D.V.I. Sept. 23, 1997).
    Neither party contests the District Court's admission of
    the pleas. Rule 609(a)(2) provides that "evidence that any
    witness has been convicted of a crime shall be admitted if
    it involved dishonesty or false statement, regardless of the
    punishment." Fed. R. Evid. 609(a)(2) (emphasis added). A
    violation of 18 U.S.C. S 641 is a crime of dishonesty
    because it involves the embezzlement of money. See Fed. R.
    Evid. 609 advisory committee notes (1990 Amendment)
    _________________________________________________________________
    when it involves the use of a prior conviction to make an ad hominem
    attack on witnesses' believability--has been questioned by at least one
    prominent evidence commentator. See Edward J. Imwinkelried, Trial
    Judges--Gatekeepers or Usurpers? Can the Trial Judge Critically Assess
    the Admissibility of Expert Testimony Without Invading the Jury's
    Province to Evaluate the Credibility and Weight of the Testimony, 84
    Marq. L. Rev. (forthcoming Fall 2000).
    26
    (noting that the House and Senate Conference Committee
    debating Rule 609 stated that " `[b]y the phrase "dishonesty
    and false statement," the Conference means crimes such as
    . . . embezzlement' "), reprinted in Federal Civil Judicial
    Procedure and Rules 389 (West 2000). The District Court
    thus followed Rule 609(a)(2)'s mandate when it admitted
    evidence of Copemann's and CBI's guilty pleas for crimes
    involving dishonesty.
    The District Court's discretion to exclude the challenged
    questions regarding the specific acts of misconduct
    underlying these pleas reposes in Rule 608(b). Pursuant to
    that Rule, which is rescribed in the margin, the specific
    acts of misconduct about which Kmart attempted to cross-
    examine Copemann are permissible lines of inquiry to
    impeach a witness's character for truthfulness, but only at
    the discretion of the district court.9 The advisory committee
    notes to Rule 608(b) recognize that, in addition to the terms
    of Rule 608(b), Rules 403 and 611 govern this discretionary
    authority. See Fed. R. Evid. 608(b) advisory committee
    notes (1972 Proposed Rules; Note to Subdivision (b)),
    reprinted in Federal Civil Judicial Procedure and Rules 383
    (West 2000).
    Elcock does not contend that Rule 608(b), by its terms,
    mandates the exclusion of this evidence. Instead, she rests
    her argument on the discretion of the District Court to
    forbid lines of inquiry permissible under Rule 608(b).
    Accordingly, as did the District Court, we turn to Rules 403
    and 611. Rule 403 provides that relevant "evidence may be
    _________________________________________________________________
    9. The Rule, in pertinent part, provides:
    (b) Specific instances of conduct. Specific instances of the
    conduct
    of a witness, for the purpose of attacking or supporting the
    witness'
    credibility, other than conviction of crime as provided in rule
    609,
    may not be proved by extrinsic evidence. They may, however, in the
    discretion of the court, if probative of truthfulness or
    untruthfulness,
    be inquired into on cross-examination of the witness (1) concerning
    the witness' character for truthfulness or untruthfulness, or (2)
    concerning the character for truthfulness or untruthfulness of
    another witness as to which character the witness being cross-
    examined has testified. . . .
    Fed. R. Evid. 608(b) (emphasis added).
    27
    excluded if its probative value is substantially outweighed
    by the danger of unfair prejudice, confusion of the issues,
    or misleading the jury, or by considerations of undue delay,
    waste of time, or needless presentation of cumulative
    evidence." Rule 611 instructs district courts to"exercise
    reasonable control over the mode and order of interrogating
    witnesses and presenting evidence so as to . . . avoid
    needless consumption of time." As noted above, the District
    Court excluded the proffered specific-acts line of inquiry
    beyond questions relating to the Copemann's and CBI's
    guilty pleas and the elements of those offenses, because
    inquiries into the facts underlying those crimes would have
    been cumulative and would have "provide[d] little further
    assistance to the jury in evaluating Dr. Copemann's
    credibility." Elcock v. Kmart Corp., Civ. No. 1996-0028F, at
    5 (D.V.I. Sept. 23, 1997). We review this decision for abuse
    of discretion. See Becker v. ARCO Chem. Co., 
    207 F.3d 176
    ,
    180-81 (3d Cir. 2000).
    The amount of money that Copemann and CBI
    misappropriated and the exact way in which they did so is
    certainly relevant to prove the extent of Copemann's
    dishonesty. A juror could rationally conclude that one who
    embezzles a million dollars from the Government over a
    long period of time has a worse character for veracity than
    a person who steals five dollars once. Cf. United States v.
    Geevers, No. 99-5155, 
    2000 WL 1171976
    , at *7 (3d Cir.
    Aug. 18, 2000) ("We think that a defendant who falsifies
    checks for large sums of money is more culpable than one
    who does so for lesser sums."). To the extent that they
    paint Copemann's crimes in a more accurate and complete
    manner (as the District Judge did in his sentencing
    opinion), questions relating to the facts underlying the
    pleas are also more probative of untruthfulness than a
    bland reference to a United States Code section or a
    recitation of the crime's elements.10
    _________________________________________________________________
    10. The criminal statute under which Copemann and CBI were
    convicted, 18 U.S.C. S 641, states:
    Whoever embezzles, steals, purloins, or knowingly converts to his
    use or the use of another, or without authority, sells, conveys or
    disposes of any record, voucher, money, or thing of value of the
    28
    In reviewing the trial court record, it is apparent that the
    extent and nature of Copemann's criminal misdeeds were
    somewhat blunted by the fact that Kmart could not ask
    Copemann about the amount of money stolen or the
    lengths to which Copemann went to misappropriate these
    funds. Thus, were we acting as the trial court in the case
    at bar, we likely would have admitted some of this
    additional evidence. However, it was well within the District
    Court's discretion to reach the conclusion it did, as that
    decision was certainly rational and consistent with the
    terms of Rules 403 and 611. The chief probative force of the
    guilty pleas was the fact that Copemann and CBI
    committed crimes of dishonesty, and this evidence came
    out during trial. Filling in the details surrounding these
    crimes would doubtless have taken a fair bit of trial time,
    and would have been cumulative insofar as doing so would
    only result in proving the same points--i.e., that Copemann
    has a character for being untruthful and his expert
    opinions should not be believed. The District Judge, having
    presided over the criminal case, was familiar with the
    complexity of the facts vel non surrounding these crimes,
    and likely had a better sense than we do of what this line
    of inquiry would have entailed.
    We give "substantial deference" to evidentiary rulings
    under Rule 403 and other similarly discretionary
    evidentiary rules. Hurley v. Atlantic City Police Dep't, 
    174 F.3d 95
    , 110 (3d Cir. 1999), cert. denied, 
    120 S. Ct. 786
    (2000). Abiding by this standard, we hold that the District
    Court did not abuse its discretion under Rules 403 and 611
    in permitting Kmart to question Copemann only about the
    United States Code section of the crime to which he and
    _________________________________________________________________
    United States or of any department or agency thereof, or any
    property made or being made under contract for the United States
    or any department or agency thereof . . .
    . . .
    [s]hall be fined under this title or imprisoned not more than ten
    years, or both; but if the value of such property does not exceed
    the
    sum of $1,000, he shall be fined under this title or imprisoned not
    more than one year, or both.
    29
    CBI entered guilty pleas, as well as the elements of that
    offense.11 We note that during the retrial of the damages
    issue on remand, Kmart is free to try to pursue its more
    expanded line of inquiry, and the District Court is
    concomitantly free to forbid such questions for the same
    reasons it did so before.
    V. The Evidentiary Issues Relating to
    Pettingill's Testimony
    Pettingill, an economist, testified on Elcock's behalf
    regarding her economic losses. He prepared an economic
    damages model that relied on several empirical
    assumptions about the extent of Elcock's injuries, her
    earning capacity before and after the accident, and her life
    expectancy. Kmart challenged each of these assumptions
    before the District Court, and raises those objections again
    on appeal. Kmart, in essence, argues that Pettingill inflated
    each of these figures in rendering his expert opinion, and in
    doing so, rested his damages opinion on assumptions
    wholly lacking foundation in the record. We review the
    District Court's decision to admit Pettingill's testimony for
    abuse of discretion.
    _________________________________________________________________
    11. Judge Garth does not agree with the majority of the panel that the
    District Court properly exercised its discretion in limiting Kmart's
    cross-
    examination of Copemann. Copemann had pled guilty to violating 18
    U.S.C. S 641 (rescribed in the margin at footnote 10). The extent of
    Copemann's crime was found to be $331,513. Kmart was prevented from
    bringing this fact to the attention of the jury when it cross-examined
    Copemann. Nor could Kmart examine Copemann about the conveyance
    and the disposal of those moneys, all of which was accomplished without
    authority.
    As the majority acknowledges, the facts underlying a plea are more
    probative of untruthfulness than merely a recitation of a violation of a
    United States Code section or a recitation of the particular crime's
    elements. While Judge Garth agrees that the District Court is entitled to
    deference when it exercises its discretion, he is of the view that, in
    this
    instance, the District Court abused its discretion by restricting the
    cross-examination of Copemann to the extent that it did. He would so
    hold.
    30
    A.
    We have held that "[a]lthough mathematical exactness is
    not required, [expert] testimony of post-injury earning
    capacity must be based upon the proper factual
    foundation." Benjamin v. Peter's Farm Condominium Owners
    Ass'n., 
    820 F.2d 640
    , 643 (3d Cir. 1987). Put another way,
    an "expert's testimony [regarding future earnings loss] must
    be accompanied by a sufficient factual foundation before it
    can be submitted to the jury." Gumbs v. International
    Harvester, Inc., 
    718 F.2d 88
    , 98 (3d Cir. 1983). In both
    Benjamin and Gumbs, we held that an expert's lost future
    earnings opinion was too speculative to be presented to the
    jury. In Benjamin, the expert relied solely on the plaintiff 's
    personal assessment of his ability to re-enter the work force
    in assuming that the injured plaintiff would make only
    $10,000 a year as a result of the injuries he 
    sustained. 820 F.2d at 642-43
    . We held that this assumption, absent
    "sufficient factual predicates," 
    id. at 642,
    was a "castle
    made of sand," 
    id. at 643
    (internal quotation marks
    omitted). In so doing, we set aside a jury verdict for the
    plaintiff, because the district court failed to exclude the
    expert opinion that relied on this flawed assumption. See
    
    id. In Gumbs,
    we held similarly. The expert in Gumbs
    "calculated the plaintiff 's future earnings loss based on
    plaintiff 's remaining life expectancy of eighteen years rather
    than plaintiff 's remaining work-life expectancy of seven and
    one-half 
    years." 718 F.2d at 98
    . The expert also assumed
    that, but for his accident, the plaintiff would in the future
    earn twice his average annual income for the four years
    preceding the accident, as well as receive "$1700 in annual
    fringe benefits even though there was no evidence that the
    plaintiff had ever received fringe benefits in the past." 
    Id. Reversing on
    other grounds, we stated that, on remand, the
    expert could not include these assumptions in his
    testimony before the jury, unless the assumptions were
    "accompanied by a sufficient factual foundation. . . ." Id.12
    _________________________________________________________________
    12. Other Courts of Appeals have similarly excluded expert opinions not
    grounded in the facts of a case. See, e.g., Quinones-Pacheco v. American
    Airlines, Inc., 
    979 F.2d 1
    , 6 (1st Cir. 1992) ("Because [the expert's]
    31
    B.
    Turning to the facts of this case, we must examine the
    disputed assumptions that Pettingill used in arriving at his
    lost economic opportunities opinion. Pettingill testified that,
    in preparing his economic damages model on Elcock's
    behalf, he had received a copy of Copemann's report, which
    presumably described Elcock as either 50 to 60 or 50 to 75
    percent disabled. Nonetheless, Pettingill assumed that
    Elcock was 100 percent disabled when arriving at his
    opinion. Pettingill also testified that he was familiar with
    Elcock's past earnings, which were relatively meager.
    Elcock's husband had testified that she worked fourteen
    hours a day as a Mary Kay representative, and the record
    shows that she earned $5,774 in 1995 (before the injury)
    and $1,070 in 1996 (after the injury). Pettingill nevertheless
    assumed, in rendering his opinion, that Elcock would have
    made $6 an hour, working 40 hours a week. Thosefigures
    indicate that Pettingill presumed that Elcock would have
    made a $12,480 a year but for her 100 percent disability,
    more than twice her pre-injury earnings. Pettingill also did
    not discount for the $1,070 that Elcock was still able to
    earn even with her injury. Moreover, although Pettingill at
    one point did suggest that the jury could discount from his
    100 percent disability figure so as to take account of the
    possibility that Elcock was not completely disabled,
    Pettingill persisted in employing the 100 percentfigure.
    As did the experts' assumptions in Benjamin and Gumbs,
    Pettingill's assumptions in the instant case lack foundation
    in the record. Though in supplemental post-appellate oral
    argument briefing Elcock has pointed out the fact that in
    the past she had worked, inter alia, as a pastry chef and a
    baker making more than $9 an hour, the underlying data
    _________________________________________________________________
    analysis was predicated on an assumption not supported by the record--
    the assumption that [the plaintiff] suffered from a permanent, total
    disability--the district court did not err in excluding the proffer."); In
    re
    Air Crash Disaster at New Orleans, La., 
    795 F.2d 1230
    , 1233 (5th Cir.
    1986) ("We find the economist's `opinion' that the collective loss of
    inheritance for the three children was $1,778,873 to be completely
    airborn[e], premised as it was on assumptions without basis in the real
    world of [the decedents].").
    32
    supporting these assertions was not part of the trial record.
    Rather, Elcock failed to adduce evidence at trial (or at any
    time before the District Court) laying a foundation for the
    fact that she could have obtained employment at those
    wages in the Virgin Islands before her injuries. Thus, the
    assumption that Elcock could have earned over $12,000 a
    year when she had only made $5,774 in the year of her
    injury should have been excluded for lack of foundation.
    The same can be said of Pettingill's failure to take into
    account the fact that Elcock continued to earn money as a
    Mary Kay salesperson after her injury. According to
    Elcock's tax records, she earned $1,070 in 1996, the year
    after her slip and fall. Pettingill ignored these more concrete
    numbers rooted in the record, which suggest that Elcock
    was not completely disabled, in favor of his arbitrary 100
    percent disability figure. He made similarly questionable
    assumptions about Elcock's life expectancy. In constructing
    his damages model, Pettingill assumed that Elcock would
    live and work to the average retirement age expected of
    African American females. He did not adjust this estimate
    to reflect the fact that Elcock's own expert, Payne, testified
    that Elcock's poorly controlled diabetes could cut her life
    span--and perhaps her working life--short. Ignoring "the
    real world of " Carmelita Elcock renders Pettingill's opinion
    inadmissible.
    In sum, we believe that Pettingill's economic damages
    model relied on several empirical assumptions that were
    not supported by the record. Although Pettingill suggested
    to the jury that it might discount the 100 percent disability
    figure that he plugged into his economic model, this
    suggestion is not sufficient to change the result. In the
    absence of clearer instructions or emphasis by the witness
    or the court, a jury is likely to adopt the grossfigure
    advanced by a witness who has been presented as an
    expert. Accordingly, the District Court abused its discretion
    in admitting Pettingill's model as evidence. Cf. 
    Benjamin, 820 F.2d at 643
    ; 
    Gumbs, 718 F.2d at 98
    . 13
    (Text continued on page 35)
    _________________________________________________________________
    13. Interestingly, though the foundation requirement for expert testimony
    is well developed in the case law and in the experience of trial lawyers
    and judges, neither our opinions in Gumbs and Benjamin nor the
    33
    evidence treatises themselves expressly ground this requirement in one
    of the Federal Rules of Evidence or in the legislative history or advisory
    committee notes accompanying the Rules. Like the case law and trial
    practice governing cross-examination for bias, see United States v. Abel,
    
    469 U.S. 45
    , 49 (1984), the foundation requirement is a rule of evidence
    that can only be found in the interstitial gaps among the federal rules.
    In these terms, Article VII would likely be the best source for the rule,
    as it governs and is titled "Opinions and Expert Testimony." Rules 702
    and 703 bear on foundation analysis, but neither Rule addresses it in
    explicit terms; nor do the advisory committee notes accompanying the
    Rules. Nonetheless, a lost future earnings expert who renders an opinion
    about a plaintiff 's future economic harm based on economic
    assumptions not present in the plaintiff 's case cannot be said to "assist
    the trier of fact," as Rule 702 requires. This type of an opinion misleads
    the fact-finder and arguably does not comply with the "fit" requirement
    of that Rule. 
    See supra
    Section II.A (discussing this requirement); see
    also 2 Stephen A. Saltzburg, Michael M. Martin & Daniel J. Capra,
    Federal Rules of Evidence Manual 1272-75 (7th ed. 1998) (detailing Rule
    702 and collecting cases in which courts have excluded expert testimony
    from economists because their damages models did notfit with the facts
    in evidence).
    Rule 703 embodies a similar requirement, which does not clearly set
    forth the foundation rule used in Gumbs and Benjamin, but which does
    bear on the analysis inhering in those cases. Rule 703, titled "Bases of
    Opinion Testimony by Experts," provides that
    [t]he facts or data in the particular case upon which an expert
    bases
    an opinion or inference may be those perceived by or made known
    to the expert at or before the hearing. If of a type reasonably
    relied
    upon by experts in the particular field in forming opinions or
    inferences upon the subject, the facts or data need not be
    admissible in evidence.
    While these limitations and the notes accompanying them do not
    specifically address the exclusion of expert testimony based on
    assumptions lacking a foundation in the record, it is not a stretch from
    the requirement that other "experts in the particular field" would
    "reasonably rel[y]" on such data in"forming opinions . . . on the
    subject,"
    
    id., to suggest
    that an expert should not depend on fictional or random
    data when rendering an opinion about the quantum of economic harm
    in a particular plaintiff 's case. Cf. 
    Saltzburg, supra, at 1397-99
    (discussing Rule 703 and collecting cases in which courts have excluded
    34
    VI. The Jury's Award
    Kmart challenges the jury's $650,000 damage award on
    two grounds. First, Kmart contends that Elcock failed to
    adduce evidence sufficient to support a jury'sfinding that
    her slip and fall caused her permanent injuries. Second,
    Kmart argues that both the economic and non-economic
    awards were excessive and should be remitted.
    A.
    In asserting that Elcock failed to establish causation with
    respect to her permanent injuries, Kmart points primarily
    to inconsistencies in the testimony of Payne, who was
    Elcock's principal witness on permanence, concerning the
    location of trigger points. On direct examination, Payne
    testified that, as a result of her fall, Elcock suffered
    permanent injuries to her back and legs, including trigger
    points in the gluteus maximus that caused pain to radiate
    _________________________________________________________________
    expert testimony because the experts unreasonably relied on underlying
    data that was too speculative or not introduced into evidence). Indeed,
    the very title of Rule 703 supports its applicability to foundation
    generally.
    Undergirding for Gumbs's and Benjamin 's foundation rule can also be
    found in Article IV of the Rules of Evidence. Rule 402 sets forth a
    liberal
    admissibility standard for "[a]ll relevant evidence," defined in Rule 401
    as
    "evidence having any tendency" to make "more probable or less probable"
    the existence "of any fact that is of consequence to the determination of
    the action." Under this framework, an economist's testimony concerning
    a reliable method for assessing future economic losses can be deemed
    relevant only insofar as a jury can usefully apply that methodology to the
    specific facts of a particular plaintiff 's case. Moreover, Rule 403
    grants
    to the district court the discretion to exclude relevant evidence "if its
    probative value is substantially outweighed by the danger of unfair
    prejudice, confusion of the issues, or misleading the jury." Given the
    realities of litigation, the opinion of a witness impressed by the court
    with the label of "expert" may carry a great deal of weight with a lay
    jury,
    particularly in matters as complex as lost future earnings assessments.
    Permitting such a witness to offer an opinion unsupported by a sufficient
    factual foundation would significantly increase the risk of misleading the
    jury and confusing the issues, the very dangers against which Rule 403
    defends.
    35
    to her right knee. On cross examination, Kmart impeached
    Payne's testimony by forcing her to admit that, according to
    the leading treatise on the subject, pain caused by trigger
    points in the gluteus maximus would not travel below the
    thigh. Payne acknowledged that her original diagnosis was
    mistaken, but responded by clarifying that Elcock's trigger
    points were in fact situated on the dividing line between the
    gluteus maximus and gluteus medius muscles. Parsing this
    testimony, Kmart contends that Payne has not offered an
    opinion as to causation based on the revised trigger point
    placement, and therefore, that Elcock has failed to produce
    sufficient evidence to support a conclusion that her slip
    and fall caused her permanent injuries.
    However, Kmart has ignored the fact that Payne testified
    on redirect examination that her misplacement of trigger
    points did not affect either her opinion regarding the
    permanence of Elcock's injuries or her conclusion that
    Elcock's slip and fall at Kmart caused those harms. Thus,
    while Kmart's cross examination may have poked some
    holes in Payne's trigger point diagnosis, Payne did reaffirm
    her opinion as to the permanence and cause of Elcock's
    injuries. In making its determination as to causation, the
    jury apparently credited Payne's testimony, as it was
    entitled to do. We will not disturb that conclusion.
    B.
    Kmart also argues that both the economic element of the
    jury's damage award, which includes a recovery for lost
    earnings and lost earning capacity, and the non-economic
    component, which includes a recovery for pain and
    suffering, were excessive and should have been remitted.
    We need not reach Kmart's remittitur argument, however,
    as we remand for a new trial on the issue of damages. Our
    discussion of the defects in Copemann's and Pettingill's
    testimony sufficiently demonstrates the need for a retrial of
    economic damages. Whether the new trial on remand must
    also extend to the non-economic portion of the jury's
    damage verdict presents a closer question.
    A partial new trial "may not properly be resorted to
    unless it clearly appears that the issue to be retried is so
    36
    distinct and separable from the others that a trial of it
    alone may be had without injustice." Vizzini v. Ford Motor
    Co., 
    569 F.2d 745
    , 760 (3d Cir. 1977) (quoting Gasoline
    Prods. Co., Inc. v. Champlin Refining Co., 
    283 U.S. 494
    , 500
    (1931)). The grant of a partial new trial is appropriate "only
    in those cases where it is plain that the error which has
    crept into one element of the verdict did not in any way
    affect the determination of any other issue." Romer v.
    Baldwin, 
    317 F.2d 919
    , 922-23 (3d Cir. 1963) (citation and
    quotation marks omitted). Having looked at the manner in
    which evidence of Elcock's damages was presented at trial,
    we must acknowledge the possibility that the jury did not
    keep the award of non-economic damages distinct and
    separate from the award of economic damages.
    For instance, at trial, Copemann offered not only an
    opinion as to Elcock's vocational disability, the basis of her
    recovery for lost earnings and lost earning capacity, but
    also testified about the extent of Elcock's psychological and
    physical injuries, a principal factor in her pain and
    suffering award. In light of Copemann's testimony, the jury
    may have considered it appropriate to base its pain and
    suffering award in part on evidence of Elcock's lost earning
    capacity. There are other possible areas of overlap. Both
    Copemann and Pettingill opined that Elcock was
    substantially, if not completely, impaired in her ability to
    work. Pettingill's lost earnings model assumed that Elcock
    was 100 percent disabled, and Copemann specifically noted
    that, following her injury, Elcock was no longerfit for the
    one job for which she was qualified. From these opinions of
    complete disability, the jury may have inferred that Elcock
    suffered a significant loss in her enjoyment of life, and
    increased her non-economic damage award accordingly.
    Because we cannot confidently conclude that theflaws in
    Elcock's evidence of economic damages did not affect the
    jury's determination of her non-economic damages, the
    general presumption against partial new trials recognized in
    Vizzini and Romer guides our decision. We therefore hold
    that a new trial must be had on the entire damage issue.14
    _________________________________________________________________
    14. Given the fact that Kmart has conceded its liability, the new trial on
    remand need not include the liability issue.
    37
    VII. Conclusion
    For the foregoing reasons, the judgment of the District
    Court will be affirmed in part and reversed in part, and the
    case remanded for a new trial on the issue of damages.
    Parties to bear their own costs.
    A True Copy:
    Teste:
    Clerk of the United States Court of Appeals
    for the Third Circuit
    38
    

Document Info

Docket Number: 98-7472

Filed Date: 10/10/2000

Precedential Status: Precedential

Modified Date: 10/13/2015

Authorities (20)

Valentin Quinones-Pacheco v. American Airlines, Inc., ... , 979 F.2d 1 ( 1992 )

Daniel G. Padillas v. Stork-Gamco, Inc , 186 F.3d 412 ( 1999 )

Hammond, Ruth L., Administratrix of the Estate of James B. ... , 691 F.2d 646 ( 1982 )

Kenneth Gumbs and Yvonne Gumbs v. International Harvester, ... , 718 F.2d 88 ( 1983 )

William P. Becker v. Arco Chemical Company, in No. 98-1636 ... , 207 F.3d 176 ( 2000 )

james-romer-an-infant-by-his-next-friend-john-romer-and-john-romer-and , 317 F.2d 919 ( 1963 )

Carl Benjamin v. Peter's Farm Condominium Owners Association , 820 F.2d 640 ( 1987 )

United States v. John W. Downing , 753 F.2d 1224 ( 1985 )

Evelyn ADORNO, Appellant, v. Donna SHALALA, Secretary of ... , 40 F.3d 43 ( 1994 )

Thomas J. Kline, Inc. v. Lorillard, Inc. , 878 F.2d 791 ( 1989 )

Aloe Coal Company and Commercial Union Insurance Company v. ... , 816 F.2d 110 ( 1987 )

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In Re Paoli Railroad Yard PCB Litigation , 35 F.3d 717 ( 1994 )

margaret-fisher-knight-v-otis-elevator-company-and-hartford-insurance , 596 F.2d 84 ( 1979 )

In Re Air Crash Disaster at New Orleans, Louisiana on July ... , 795 F.2d 1230 ( 1986 )

Gasoline Products Co. v. Champlin Refining Co. , 51 S. Ct. 513 ( 1931 )

Daubert v. Merrell Dow Pharmaceuticals, Inc. , 113 S. Ct. 2786 ( 1993 )

Koon v. United States , 116 S. Ct. 2035 ( 1996 )

Kumho Tire Co. v. Carmichael , 119 S. Ct. 1167 ( 1999 )

United States v. Abel , 105 S. Ct. 465 ( 1984 )

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