IN THE COURT OF CRIMINAL
APPEALS
OF TEXAS
NO. PD-1388-04
RICHARD VELA, JR., Appellant
v.
THE STATE OF
TEXAS
ON STATE'S PETITION FOR DISCRETIONARY REVIEW
FROM THE THIRTEENTH COURT OF APPEALS
NUECES COUNTY
Keasler,
J., delivered
the
opinion for a unanimous Court.
Cochran, J., filed a
concurring opinion in which Johnson, J.,
joined.
O P I N I O N
The trial judge
excluded the testimony of Richard Vela, Jr.'s witness, Cheryl Hartzendorf, who
would have testified that if there is no physical evidence, then no rape
occurred. The court of appeals ruled that Hartzendorf should have been allowed
to testify because her experience qualified her as an expert.
(1) Because we hold that the court of appeals failed to
conduct a proper analysis, we remand this case to the court of
appeals.
Facts and Procedural History
At Richard Vela's
trial for three counts of sexual assault and one count of aggravated assault,
the State called Sonia Eddleman, the sexual assault nurse examiner who examined
the victim after the rape. Eddleman stated that the examination revealed no
injuries to the victim's mouth or genitals but that there was an "oozing tear"
in the victim's anus and bruising on her body. Based on her examination,
Eddleman claimed the victim had been sexually assaulted.
Vela later called
Cheryl Hartzendorf, a certified legal nurse consultant, and the State requested
a hearing outside the jury's presence. Before trial, Hartzendorf had reviewed
the victim's hospital records and the Department of Public Safety lab report
containing the results of Eddleman's examination. Hartzendorf intended to
testify that, in her opinion, because there was no DNA or physical evidence
linking Vela to the alleged rape, no sexual assault occurred. She further stated
that her opinion was based on her general nursing experience and that she had
not written, nor was aware of, any published articles supporting that theory.
The trial judge allowed the State to recall Eddleman to rebut Hartzendorf's
testimony. The State then challenged Hartzendorf's credentials and methodology,
and the trial judge sustained the State's objection. The jury later acquitted
Vela on two of the sexual-assault counts but
convicted him of the sexual assault alleged in count three and the aggravated
assault charge.
The
Thirteenth Court of Appeals determined that Hartzendorf was a qualified expert
witness,
(2) and after performing a harm analysis, the court found that her
testimony could have had a significant effect on the outcome of the
sexual-assault conviction.
(3) Asserting that "the trial judge, in excluding Hartzendorf's
testimony, acted without reference to any guiding rules and principles," the
court of appeals held that the trial judge abused his discretion in excluding
Hartzendorf's testimony.
(4) As a result, the court of appeals reversed Vela's sexual-assault
conviction but affirmed the aggravated assault conviction because Hartzendorf
did not intend to testify about the alleged choking of the victim. (5)
We granted review
to determine whether the Thirteenth Court of Appeals erred in holding that the
trial judge abused his discretion in not permitting an expert witness's
testimony to the effect that where there is no physical evidence, there is no
rape.
Expert Testimony
The
Texas Rules of Evidence set out three separate conditions regarding
admissibility of expert testimony. First, Rule 104(a) requires that
"[p]reliminary questions concerning the qualification of a person to be a
witness . . . be determined by the court . . . ."
(6) Second, Rule 702 states: "If 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."
(7) And third, Rules 401 and 402 render testimony admissible only if
it "tend[s] to make the existence of any fact that is of consequence to the
determination of the action more probable or less probable than it would be
without the evidence." (8)
These rules
require a trial judge to make three separate inquiries, which must all be met
before admitting expert testimony: "(1) the witness qualifies as an expert by
reason of his knowledge, skill, experience, training, or education; (2) the
subject matter of the testimony is an appropriate one for expert testimony; and
(3) admitting the expert testimony will actually assist the fact-finder in
deciding the case."
(9) These conditions are commonly referred to as (1) qualification,
(2) reliability, and (3) relevance. Only the first two conditions are at issue
in this case, and we consider each in turn.
A. Qualifications of an Expert
Witness
In
Rodgers v. State, we noted that an appellate court should consider
three criteria when determining whether a trial court abused its discretion in
evaluating a witness's qualifications as an expert: (1) "is the field of
expertise complex?"
(10); (2) "how conclusive is the expert's opinion?"
(11); and (3) "how central is the area of expertise to the resolution
of the lawsuit?" (12)
Qualification is distinct from reliability and relevance
and, therefore, should be evaluated independently. Although this Court has
touched on the qualification analysis in prior cases, we have never discussed it
in depth. We therefore look to Texas Supreme Court opinions for additional
guidance. As that Court recognized in Broders v. Heise, the mere fact
that a witness "'possesse[s] knowledge and skill not possessed by people
generally . . .' does not in and of itself mean that such expertise will assist
the trier of fact regarding the issue before the court."
(13) And because a witness will not always qualify as an expert merely
by virtue of a general background,
(14) qualification is a two-step inquiry. A witness must first have a
sufficient background in a particular field, but a trial judge must then
determine whether that background "goes to the very matter on which [the
witness] is to give an opinion." (15)
The
Texas Supreme Court examined the second step of the qualification inquiry in
Broders. The Court considered "whether the trial court abused its
discretion in excluding the testimony of an emergency physician that the conduct
of the three defendant emergency physicians and the defendant hospital was a
cause in fact of a patient's death."
(16) The proponents argued that "merely because [the witness was] a
medical doctor," the witness was qualified to testify about "all medical
matters."
(17) Rejecting that argument, the Court explained that "there is no
validity . . . to the notion that every licensed medical doctor should be
automatically qualified to testify as an expert on every medical question."
(18) If a medical degree carried automatic expert qualification in all
medical matters, a trial judge could no longer fulfill his gatekeeping duty and
"ensur[e] that those who purport to be experts truly have expertise concerning
the actual subject about which they are offering an opinion." (19)
The
Court explained that the proponent must "establish that the expert has
'knowledge, skill, experience, training, or education' regarding the specific
issue before the court which would qualify the expert to give an opinion on that
particular subject."
(20) Given the facts in Broders, the Court determined that
the proponents "simply did not establish that [the witness's] opinions on cause
in fact would have risen above mere speculation to offer genuine assistance to
the jury." (21)
In
Christopherson v. Allied-Signal Corporation, the Fifth Circuit
acknowledged the same problem with medical experts:
[A]lthough credentials can be significant, they alone
are not necessarily determinative. The questions, for example, do not stop if
the expert has an M.D. degree. That alone is not enough to qualify him to give
an opinion on every conceivable medical question. This is because the inquiry
must be into actual qualification . . . . (22)
Similarly, in Gammill v. Jack Williams Chevrolet,
Inc., the Texas Supreme Court again addressed the second part of the
qualification inquiry and examined the qualifications of witnesses to testify as
experts in an automobile-related products-liability suit.
(23) Examining the background of one witness, the Court concluded that
the witness "was shown to be experienced in designing and testing fighter planes
and missiles, but he was not shown to have any training or experience in the
design or manufacture of automobiles or their relevant components."
(24) Because "his only experience with automobiles at all was while
working part-time as a mechanic doing general repairs," the witness did not
"have any expertise that would qualify him to testify about design defects in a
vehicle's accelerator or restraint system . . . [or] as to the cause of [the
victim's] injuries or death."
(25) Notwithstanding his extensive background, the Court held that the
witness was not qualified to render an opinion on the specific questions
regarding automobiles that were at issue in that case. (26)
"The focus, then,
is on the 'fit' between the subject matter at issue and the expert's familiarity
therewith, and not on a comparison of the expert's title or specialty with that
of the defendant or a competing expert."
(27) We discussed the "fit" requirement in Jordan v. State
and explained that the issue under the reliability and relevance conditions "is
whether the expert's testimony took into account enough of the pertinent facts
to be of assistance to the trier of fact on a fact in issue."
(28) But "fit" is not just a component of reliability and
relevance--it is also a component of the qualification inquiry. Just as the
subject matter of an expert's testimony should be tailored to the facts of a
case, the expert's background must be tailored to the specific area of expertise
in which the expert desires to testify.
The court of
appeals failed to do an adequate inquiry into Hartzendorf's qualifications to
testify about physical evidence of rape. Rather, the court simply referenced
Hartzendorf's education and experience as a nurse and deemed that general
background sufficient to qualify her as an expert witness. So the court made no
meaningful inquiry into Hartzendorf's qualifications in that specific area of
expertise.
B. Reliability of an Expert's
Testimony
The court of
appeals claimed that "the reason for the trial judge's decision . . . [was] that
the testimony was not reliable primarily because Hartzendorf had no scientific
theory to support her opinion, and therefore, was not qualified."
(29) This assertion illustrates the court's substitution of
"reliability" for "qualification." While qualification deals with the witness's
background and experience, reliability focuses on the subject matter of the
witness's testimony. The court of appeals muddled the qualification and
reliability analyses and, therefore, failed to consider the reliability of
Hartzendorf's testimony at all.
Texas Rule of Evidence 705(c) governs the reliability of
expert testimony and states that "[i]f the court determines that the underlying
facts or data do not provide a sufficient basis for the expert's opinion under
Rule 702 or 703, the opinion is inadmissible."
(30) "[R]eliability depends upon whether the evidence has its basis in
sound scientific methodology. This demands a certain technical showing."
(31) And that showing gives a trial judge the opportunity to "weed out
testimony pertaining to so-called 'junk science.'"
(32) Thus, just because "'junk science' or otherwise inadequately
tested scientific theories might be shown to relate to the facts of a case," it
will not always have a sufficiently reliable basis. (33)
Unlike qualification, the reliability condition has been
thoroughly discussed in prior opinions. In Kelly v. State, we explained
that scientific evidence must meet three criteria to be reliable: "(a) the
underlying scientific theory must be valid; (b) the technique applying the
theory must be valid; and (c) the technique must have been properly applied on
the occasion in question." (34) We then outlined a list
of non-exclusive factors that could affect a trial judge's decision on
reliability:
(1) the extent to
which the underlying scientific theory and technique are accepted as valid by
the relevant scientific community, if such a community can be ascertained; (2)
the qualifications of the experts testifying; (3) the existence of literature
supporting or rejecting the underlying scientific theory and technique; (4) the
potential rate of error of the technique; (5) the availability of other experts
to test and evaluate the technique; (6) the clarity with which the underlying
scientific theory and technique can be explained to the court; and (7) the
experience and skill of the person(s) who applied the technique on the occasion
in question.
(35)
And
even if the traditional Kelly reliability factors do not perfectly
apply to particular testimony, the proponent is not excused from proving its
reliability. As the Texas Supreme Court recognized, "The court in discharging
its duty as gatekeeper must determine how the reliability of particular
testimony is to be assessed."
(36) The reliability inquiry is, thus, a flexible one. In some cases,
the reliability of scientific knowledge will be at issue; in others, "the
relevant reliability concerns may focus upon personal knowledge or
experience."
(37) But the proponent must establish some foundation for the
reliability of an expert's opinion.
(38) "Experience alone may provide a sufficient basis for an expert's
testimony in some cases, but it cannot do so in every case." (39)
"Without more than credentials and a subjective opinion,
an expert's testimony that 'it is so' is not admissible."
(40) In Viterbo v. Dow Chemical Company, the Fifth Circuit
excluded an expert's testimony because it was "no more than Viterbo's testimony
dressed up and sanctified as the opinion of an expert."
(41) The district court had examined the data on which Viterbo's
expert's opinion was based and found it to be lacking in reliability and
probative value.
(42) The court held that the expert "lacked objectivity in that he
diagnosed Viterbo's condition . . . based only on the patient's oral history and
without the benefit of medical tests."
(43) The expert also "had no scientific literature to support his
position and the tests which [the expert] performed did not establish a causal
link between Viterbo's symptoms and [the drug manufactured by the
defendant]." (44)
The
Fifth Circuit noted that the dispute was not over qualification, because the
expert was properly qualified.
(45) Rather, "[t]he dispute center[ed] on the source and basis of the
expert opinion . . . ."
(46) The court acknowledged that the basis of an expert's opinion may
sometimes be "of such little weight that the jury should not be permitted to
receive that opinion."
(47) But the court also recognized that even though trial judges may
give experts "wide latitude" in selecting their sources, the judge must still
evaluate those sources' reliability. (48)
In
this case, the court of appeals asserted that if "a particular type of
scientific evidence is well established as reliable," the proponent may avoid
the burden of producing supportive evidence by asking that the trial court take
judicial notice.
(49) And the court claimed that "[c]learly, medical testimony in
sexual assault cases, whether by a nurse, sexual assault examiner, or physician,
is the type of scientific evidence that is well established as reliable."
(50) The court of appeals, therefore, failed to make any inquiry into
the reliability of Hartzendorf's theory. Instead, the court of appeals deemed
Hartzendorf qualified to testify as an expert and then simply asserted that the
trial court erred in excluding her testimony because medical testimony is "well
established as reliable." (51)
C. Analysis
The court of
appeals performed an incorrect analysis of Hartzendorf's qualifications as an
expert witness and failed to perform any analysis of the reliability of the
subject matter of her testimony. The court of appeals gave three reasons why the
trial court erred in sustaining the State's objection to Hartzendorf's
qualifications.
(52) First, the court stated that "since practical experience alone is
sufficient to qualify one as an expert, there is necessarily no requirement that
the witness have written or read any articles subject to peer review before
stating an opinion."
(53) While perhaps true in some circumstances, such a blanket
assertion is inaccurate. To qualify a witness as an expert by practical
experience alone, a trial judge must fully explore that witness's experience in
the particular field in which the witness intends to give an expert opinion. A
cursory reference to the witness's credentials is insufficient to support expert
status. Moreover, the State's argument at trial regarding Hartzendorf's lack of
published articles referred to the reliability of her scientific theory, not to
her qualifications as an expert witness. Therefore, the court of appeals
misunderstood the State's argument.
Next, the court
of appeals stated that "we are not aware of any authority permitting the party
against whom the expert testimony is offered to use its own expert to challenge
the qualifications of the opponent's expert."
(54) Even if this was an
accurate statement, the State called Eddleman to rebut the reliability of
Hartzendorf's testimony, not to challenge her qualifications.
Finally, the
court of appeals stated that "to the extent the trial judge based his decision
to exclude Hartzendorf's testimony on the basis that he personally did not agree
with her opinion or did not find her credible was an abuse of discretion."
(55) But credibility and reliability are not the same. A jury should
evaluate credibility, but unreliable evidence should never make it to the jury.
As the court of appeals below acknowledged, "[t]he trial judge as gatekeeper is
to determine the reliability, relevancy, and admissibility of scientific
evidence."
(56) And acting as "gatekeeper," the trial judge found Hartzendorf's
scientific theory unreliable and, therefore, refused to admit her
testimony.
We recognize that
the "focus, of course, must be solely on principles and methodology, not on the
conclusions that they generate."
(57) But we also agree that a trial judge need not "admit
opinion evidence which is connected to existing data only by the ipse
dixit of the expert. A court may conclude that there is simply too great an
analytical gap between the data and the opinion proffered."
(58) Here, the court of appeals did not give proper deference to the
trial judge's ruling. "[B]ecause the possible spectrum of education, skill, and
training is so wide, a trial court has great discretion in determining whether a
witness possesses sufficient qualifications to assist the jury as an expert on a
specific topic in a particular case."
(59) And when a trial judge determines that a witness is or is not
qualified to testify as an expert, "appellate courts rarely disturb the trial
court's determination." (60)
Conclusion
Because the court
of appeals improperly evaluated Hartzendorf's qualifications, failed to evaluate
the reliability of her proposed testimony, and failed to give proper deference
to the trial judge, we vacate the judgment of the court of appeals and remand
this case to the court of appeals for proceedings consistent with this
opinion.
DATE DELIVERED:
December 13, 2006
PUBLISH
1.
Vela v. State,
159 S.W.3d 172, 179 (Tex. App.--Corpus Christi 2004).
2.
Id.
3.
Id. at 182.
4.
Id. at 180.
5.
Id. at 182.
6.
Tex. R. Evid. 104(a).
7.
Tex. R. Evid. 702.
8.
Tex. R. Evid. 401, 402.
9.
Rodgers v. State,
No. PD-0645-05, 2006 Tex. Crim. App. LEXIS 852, at *4 (Tex. Crim. App. May 3,
2006).
10.
Id. at *6.
11.
Id.
12.
Id. at *7.
13.
924 S.W.2d 148, 153 (Tex.
1996).
14.
Gammill v. Jack
Williams Chevrolet, Inc., 972 S.W.2d 713, 719 (Tex. 1998) ("Just as not
every physician is qualified to testify as an expert in every medical
malpractice case, not every mechanical engineer is qualified to testify as an
expert in every products liability case.").
15.
Broders, 924
S.W.2d at 153 (citing Christopherson v.
Allied-Signal Corp., 939 F.2d 1106 (5th Cir. 1991)).
16.
Id.
17.
Id. at 152.
18.
Id.
19.
Id. at 152-53.
20.
Id. at 153.
21.
Id.
22.
Christopherson,
939 F.2d at 1112-13.
23.
972 S.W.2d at 715.
24.
Id. at 719.
25.
Id.
26.
Id.
27.
Broders, 924
S.W.2d at 153 (quoting Nunley v. Kloehn,
888 F. Supp. 1483, 1488 (E.D. Wis. 1995)).
28.
928 S.W.2d 550, 556 (Tex.
Crim. App. 1996).
29.
Vela, 159 S.W.3d
at 178.
30.
Tex. R. Evid. 705(c).
31.
Jordan, 928
S.W.2d at 555.
32.
Id.
33.
Id.
34.
824 S.W.2d 568, 573 (Tex.
Crim. App. 1992).
35.
Id.
36.
Gammill, 972
S.W.2d at 726.
37.
Kumho Tire Co. v.
Carmichael, 526 U.S. 137, 150 (1999).
38.
Gammill, 972
S.W.2d at 726.
39.
Id.
40.
826 F.2d 420, 424 (5th
Cir. 1987).
41.
Id.
42.
Id. at 421.
43.
Id. at 422.
44.
Id.
45.
Id.
46.
Id.
47.
Id.
48.
Id.
49.
Vela, 159 S.W.3d
at 178.
50.
Id.
51.
Id.
52.
Id. at 179.
53.
Id.
54.
Id.
55.
Id. at 180.
56.
Id. (citing
Hartman
v. State, 946 S.W.2d 60, 63 (Tex. Crim. App. 1997)).
57.
Daubert v. Merrell Dow
Pharms., Inc., 509 U.S. 579, 595 (1993).
58.
Gen. Elec. Co. v.
Joiner, 522 U.S. 136, 146 (1997).
59.
Rodgers, 2006
Tex. Crim. App. LEXIS 852, at *5.
60.
Id. at *5
n.9.