Carlos Antonio Holcombe v. State ( 2018 )


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  •                                            COURT OF APPEALS
    EIGHTH DISTRICT OF TEXAS
    EL PASO, TEXAS
    CARLOS ANTONIO HOLCOMBE,                                 §
    No. 08-17-00008-CR
    Appellant,                        §
    Appeal from the
    v.                                                       §
    41st District Court
    THE STATE OF TEXAS,                                      §
    of El Paso County, Texas
    Appellee.                         §
    (TC# 20160D02495)
    §
    OPINION
    A jury convicted Carlos Antonio Holcombe of one count of aggravated kidnapping, three
    counts of aggravated sexual assault of a child, and one count of indecency with a child by sexual
    contact. During the guilt-innocence phase of trial, Holcombe offered two expert witnesses to
    testify to his alleged insanity during the commission of the offense. The trial court excluded the
    proffered testimony from both witnesses. On appeal, Holcombe argues the trial court committed
    reversible error by excluding these witnesses. We affirm.
    BACKGROUND
    C.R.,1 who was twelve years old at the time of the offense, testified to the events that
    occurred on August 22, 2014. On that day, C.R. and her older sister went to a local high school
    1
    To protect the identity of the minor-victim, we refer to her as “C.R.” See TEX. R. APP. P. 9.10(a)(3).
    to watch a football game. After arguing with her sister, C.R. left the stands in anger and
    momentarily sat alone near a parking lot before heading toward a bathroom. As she walked, a
    man later identified as Holcombe approached and asked for her help in unloading boxes from his
    truck. C.R. agreed and together they walked to his parked vehicle. As they reached his truck,
    Holcombe opened a door and grabbed a bag. He then mentioned he had dropped something
    underneath a seat and asked C.R. to reach for it. C.R. reached but found nothing. Turning to tell
    him, she then saw he had a gun pointed towards her back and she started to cry. Holcombe told
    her to stay quiet, to calmly get inside, and to sit on the floor of the front passenger seat with her
    head down. Fearing for her life, C.R. complied.
    Holcombe drove C.R. for a short ride before coming to a stop. Holcombe told C.R. to
    take off her shirt and pants. Next, he used tape to bind her hands and cover her eyes. From that
    point, he carried her up a flight of stairs, placed her on a bed, then sexually assaulted her repeatedly
    while she remained blindfolded. Afterward, Holcombe dressed her but kept her blindfolded. He
    returned her to his vehicle and he drove as she sat in the same position as before on the floorboard.
    Eventually, the vehicle came to a stop and he took off her blindfold, gave her back her phone and
    glasses, and told her to keep her head down and walk forward. As he left, she ran to a group of
    teenagers who let her know she could find an officer inside a nearby movie theatre. C.R. ran
    inside, found an officer, and reported what had happened to her. Soon, she was taken to a hospital
    for treatment. While there, C.R. gave officers a description of Holcombe’s appearance and the
    type of vehicle he was driving.
    The next day, after officers watched footage from a security camera posted at the high
    school, they located Holcombe’s vehicle in a nearby neighborhood. Once officers made contact,
    2
    Holcombe agreed to give a statement. Later, officers executed a search warrant at his residence
    where they recovered a black duffel bag containing gloves, duct tape, and a black BB gun altered
    to look like a handgun. Holcombe was arrested after C.R. identified him in a photo lineup.
    Forensic testing linked Holcombe’s DNA to samples taken from C.R.’s body. Afterward, the
    State charged Holcombe by indictment with one count of aggravated kidnapping, three counts of
    aggravated sexual assault of a child, and one count of indecency with a child by sexual contact.
    Prior to trial, Holcombe filed a notice of intent to pursue an insanity defense. During
    opening statements, Holcombe’s defense counsel announced he would not dispute the alleged
    events, but instead, he would show that Holcombe was not guilty of charges brought against him
    by reason of insanity. Holcombe later called two expert witnesses in support of his defense. First,
    he called Daniel Daigle, a “traumatologist” and mental health counselor working with the federal
    detention center in Sierra Blanca, Texas. On voir dire examination, Daigle testified he had
    diagnosed Holcombe as suffering from complex post-traumatic stress disorder (PTSD); however,
    he would not be able to offer an opinion on whether Holcombe’s condition met the insanity defense
    requirement of severe mental disease or defect, or whether his condition caused him to commit the
    offense charged. The State then objected to admission of Daigle’s testimony claiming he was not
    qualified as an expert and his testimony would not be relevant to Holcombe’s claimed defense.
    The trial court sustained the State’s objection and excluded Daigle’s testimony.
    Holcombe next called Dr. James Schutte, a licensed psychologist.               On voir dire
    examination, Dr. Schutte testified that he believed Holcombe did not know his conduct was wrong
    because he was intoxicated through alcohol and marijuana consumption.              Dr. Schutte also
    testified that Holcombe may have experienced a “dissociative fugue” that caused him not to
    3
    remember his actions. The State objected to the admission of Dr. Schutte’s testimony, arguing it
    was irrelevant since Dr. Schutte believed Holcombe to be temporarily insane due to voluntary
    intoxication. The State argued that voluntary intoxication does not constitute a legal defense to a
    crime. The State also argued that Holcombe’s lack of memory of the events was insufficient to
    support a jury instruction on the issue of insanity. The trial court sustained the State’s objection
    and excluded Dr. Schutte’s testimony, reasoning that Dr. Schutte had merely opined that
    Holcombe was voluntarily intoxicated at the time of the events. The court also refused to submit
    a jury instruction on the issue of insanity.
    Following their deliberation, the jury found Holcombe guilty of all charges and assessed a
    punishment that included four life sentences for the aggravated kidnapping and aggravated sexual
    assault of a child counts, and twenty years’ imprisonment for the indecency with a child count,
    with each sentence running concurrently. This appeal followed.
    DISCUSSION
    In two issues, Holcombe challenges the trial court’s exclusion of his two proposed experts
    who were proffered during the guilt-innocence phase of trial. In his first issue, Holcombe argues
    the trial court abused its discretion by failing to qualify Daigle as an expert witness in violation of
    TEX. R. EVID. 702. In his second issue, Holcombe argues the trial court abused its discretion by
    excluding Dr. Schutte’s testimony on relevance grounds in violation of TEX. R. EVID. 401. These
    issues will be considered in turn.
    Applicable Law
    “Texas law, like that of all American jurisdictions, presumes that a criminal defendant is
    sane and that he intends the natural consequences of his acts.” Ruffin v. State, 
    270 S.W.3d 586
    ,
    4
    591 (Tex. Crim. App. 2008). Criminal responsibility, however, is excused if a defendant proves,
    by a preponderance of the evidence, the affirmative defense of insanity. 
    Id. at 592
    (citing TEX.
    PENAL CODE ANN. § 8.01(a)). Under the Texas Penal Code, “[i]t is an affirmative defense to
    prosecution that, at the time of the conduct charged, the actor, as a result of severe mental disease
    or defect, did not know that his conduct was wrong.” TEX. PENAL CODE ANN. § 8.01(a). A
    defendant may present evidence in the form of expert witness testimony to establish that he was
    legally insane at the time of the commission of the offense. See, e.g., Teel v. State, No. 02-09-
    00150-CR, 
    2010 WL 4812994
    , at *1–2 (Tex. App.—Fort Worth Nov. 24, 2010, pet. ref’d) (mem.
    op., not designated for publication). Insanity caused by voluntary intoxication does not constitute
    a defense to the commission of a crime, but evidence of voluntary intoxication may be introduced
    during the punishment phase of trial as mitigation evidence. TEX. PENAL CODE ANN. §§ 8.04(a),
    (b).
    Testimony that does not directly rebut the culpable mental state may be excluded at the
    guilt stage. Mays v. State, 
    318 S.W.3d 368
    , 381 (Tex. Crim. App. 2010). One manner by which
    an opponent of proposed expert witness testimony may challenge the admission of that testimony
    is on relevance grounds. See Teel, 
    2010 WL 4812994
    , at *2 (considering a trial court’s decision
    to exclude expert testimony under a Rule 401 analysis), accord Briones v. State, No. 14-07-01047-
    CR, 
    2009 WL 2356626
    , at *6 (Tex. App.—Houston [14th Dist.] 2009, pet. ref’d) (mem. op., not
    designated for publication). Evidence is relevant if it makes a fact of consequence in the action
    more or less likely than it would be without the evidence. TEX. R. EVID. 401; see Teel, 
    2010 WL 4812994
    , at *1–2. Evidence must be material and probative to be relevant. Miller v. State, 
    36 S.W.3d 503
    , 507 (Tex. Crim. App. 2001).           Evidence is material if it proves any fact of
    5
    consequence to the determination of the action. TEX. R. EVID. 401. The probative force of the
    evidence refers to how strongly it serves to make the existence of a fact of consequence more or
    less probable.     Gigliobianco v. State, 
    210 S.W.3d 637
    , 641 (Tex. Crim. App. 2006).
    Accordingly, irrelevant evidence is not admissible. TEX. R. EVID. 402.
    Thus, while federal due process guarantees the defendant a meaningful opportunity to
    present a complete defense, trial courts have wide latitude to exclude evidence which is irrelevant,
    only marginally relevant, or poses an undue risk of confusion of the issues. Crane v. Kentucky,
    
    476 U.S. 683
    , 689–90, 
    106 S. Ct. 2142
    , 2146, 
    90 L. Ed. 2d 636
    (1986). This discretion to exclude
    expert testimony extends to proffered testimony the trial court deems irrelevant. See Teel, 
    2010 WL 4812994
    , at *1–2.
    Daigle’s Testimony
    Turning to Issue One, Holcombe argues the trial court abused its discretion by failing to
    qualify Daigle as an expert witness in violation of TEX. R. EVID. 702. The decision to admit or
    exclude expert testimony is reviewed for abuse of discretion, and a trial judge is afforded discretion
    in determining whether a witness has sufficient qualifications to testify as an expert on a particular
    topic. Vela v. State, 
    209 S.W.3d 128
    , 136 (Tex. Crim. App. 2006). As such, an appellate court
    will rarely disturb a trial court’s determination that a witness is or is not qualified to testify as an
    expert. 
    Id. The Texas
    Rules of Evidence govern the admissibility of expert witness testimony. A
    court must decide any preliminary question about whether a witness is qualified. TEX. R. EVID.
    104(a). As for admissibility of expert witnesses, Rule 702 provides as follows:
    A witness who is qualified as an expert by knowledge, skill, experience, training,
    or education may testify in the form of an opinion or otherwise if the expert’s
    6
    scientific, technical, or other specialized knowledge will help the trier of fact to
    understand the evidence or to determine a fact in issue.
    TEX. R. EVID. 702.
    Thus, the proponent of scientific evidence must show, by clear and convincing proof, that
    the evidence he is proffering is sufficiently relevant and reliable to assist the jury in accurately
    understanding other evidence or in determining a fact in issue. Weatherred v. State, 
    15 S.W.3d 540
    , 542 (Tex. Crim. App. 2000). In determining whether a proposed expert’s testimony is
    admissible, a trial court should make at least three separate inquiries before admitting such
    testimony: (1) whether the witness is qualified as an expert by reason of knowledge, skill,
    experience, training, or education; (2) whether the subject matter of the testimony is an appropriate
    one for expert testimony; and (3) whether the expert testimony actually assists the fact finder in
    deciding the case. 
    Vela, 209 S.W.3d at 131
    . “These conditions are commonly referred to as (1)
    qualification, (2) reliability, and (3) relevance.” 
    Id. Qualification The
    first condition implicates the qualifications of a proposed expert witness.             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) whether the field of expertise
    is complex; (2) how conclusive the expert’s opinion is; and (3) how central the area of expertise is
    to the resolution of the case. 
    Id. (citations omitted).
    The focus is on the “fit” between the subject
    matter at issue and the expert’s familiarity with it, not on the expert’s title or specialty; thus, the
    inquiry should focus on whether a witness’s background “goes to the very matter on which the
    witness [will] give an opinion.” 
    Id. (citation omitted).
    On voir dire examination, Daigle testified he was currently employed as a mental health
    7
    counselor with the detention center in Sierra Blanca. Daigle testified he had a bachelor’s degree
    in business and a master’s degree in mental health counseling. He described he was nationally
    certified as a “traumatologist” by the Florida State University Trauma Institute. A traumatologist,
    he explained, “focuses primarily on all sorts of trauma and anything related to trauma. It’s a very
    rare—I’m probably maybe the only one in El Paso. I don’t know.”
    Daigle clarified that he is not a medical doctor nor a Ph.D. Although he was trained to
    diagnose PTSD, he described he could not diagnose a traumatic brain injury (TBI). He has not
    taught any courses or published any articles regarding PTSD or therapy generally. He had
    testified as an expert witness once before in Florida in a marital case. He admitted he was not
    familiar with the Texas Penal Code provision providing that voluntary intoxication is not
    recognized as a defense. He also admitted he did not know whether PTSD is recognized as a
    severe disease or mental defect as those terms are defined by the Texas Penal Code. Ultimately,
    Daigle admitted he could not give an opinion on whether Holcombe’s actions during the
    commission of the offense were caused by a severe mental disease or mental defect as defined by
    the Texas Penal Code.
    In his brief, Holcombe concedes that the field of psychology on which Daigle was proffered
    to testify is “somewhat complex,” and therefore the degree of his qualifications should be
    correspondingly high. Because Daigle testified that he had a master’s degree in mental health
    counseling, was employed as a mental health counselor, and was licensed as a traumatologist by
    Florida State University Trauma Institute, we believe he was qualified to testify as an expert in
    psychology and mental health counseling generally. See 
    Vela, 209 S.W.3d at 133
    ; see also
    Beatley v. State, No. 10-02-118-CR, 
    2003 WL 21780952
    , at *1–2 (Tex. App.—Waco Jul. 30,
    8
    2003, pet. ref’d) (mem. op., not designated for publication) (licensed professional counselor
    holding a master’s degree in clinical psychology was qualified to testify as an expert in the area of
    psychology).
    More specifically, however, the relevant question to address in this issue is whether Daigle
    was qualified to testify on Holcombe’s alleged insanity defense. See Chakravarthy v. State, 
    516 S.W.3d 116
    , 131 (Tex. App.—Corpus Christi 2017, pet. ref’d) (the more conclusive the expert’s
    testimony is, the more important is his degree of expertise); 
    Vela, 209 S.W.3d at 131
    . Even
    assuming Daigle’s credentials were sufficient to qualify him as an expert in mental health
    generally, those qualifications were not sufficient to go to the “very matter on which [he was] to
    give an opinion” in this case: whether Holcombe had an alleged mental illness connected with a
    contested issue of the case. See 
    Vela, 209 S.W.3d at 131
    . Daigle plainly stated he was unable to
    give an opinion on the relevant inquiry of whether Holcombe’s purported mental health led to his
    inability to know the difference between right and wrong. Daigle admitted that he did not know
    whether PTSD was recognized as a severe mental disease or defect as defined by the Texas Penal
    Code; or, whether voluntary intoxication qualified as a defense to the commission of a crime. In
    other words, because there was a lack of “fit” between Daigle’s qualifications and his proffered
    testimony, this factor weighs against a finding that he was qualified to testify as a defense expert
    in this case. See 
    id. at 133.
    Reliability
    The second condition we consider is the reliability of a proposed witness’s theories and
    techniques. See 
    id. at 131.
    To be considered sufficiently reliable as to be helpful to a jury,
    scientific evidence must meet three criteria: (1) the underlying scientific theory must be valid;
    9
    (2) the technique applying the theory must be valid; and (3) the technique must have been properly
    applied on the occasion in question. 
    Id. at 134;
    Kelly v. State, 
    824 S.W.2d 568
    , 573 (Tex. Crim.
    App. 1992). Factors that could affect a trial court’s determination of reliability include, but are
    not limited to: (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 expert 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. 
    Kelly, 824 S.W.2d at 573
    .
    Given that methods of proving reliability vary depending on the field of expertise,
    proffered testimony from experts in “soft” sciences such as psychology is reviewed under a more
    flexible standard set out in Nenno v. State, 
    970 S.W.2d 549
    , 561 (Tex. Crim. App. 1998), overruled
    on other grounds by State v. Terrazas, 
    4 S.W.3d 720
    , 727 (Tex. Crim. App. 1999) (en banc). See
    
    Weatherred, 15 S.W.3d at 542
    ; Harris v. State, 
    424 S.W.3d 599
    , 602 (Tex. App.—Corpus Christi
    2013, pet. ref’d). Under the Nenno standard, the trial court should inquire as to whether: “(1) the
    field of expertise involved is a legitimate one, (2) the subject matter of the expert’s testimony is
    within the scope of that field, and (3) the expert’s testimony properly relies upon or utilizes the
    principles involved in that field.” Tillman v. State, 
    354 S.W.3d 425
    , 435–36 (Tex. Crim. App.
    2011) (citing 
    Weatherred, 15 S.W.3d at 542
    ); see 
    Harris, 424 S.W.3d at 602
    (applying the Nenno
    standard to expert testimony in the area of psychology).
    10
    Here, Daigle testified he did not speak with Holcombe near the time the offense was
    committed. Additionally, he testified he did not review police reports or witness statements, nor
    did he review Holcombe’s medical records, VA records, or jail records. While Daigle evaluated
    Holcombe for PTSD and other related disorders, he did not conduct any type of standardized
    psychological testing on him. Instead, he opted to utilize techniques established by the VA
    National Center for Trauma. These techniques involved asking open-ended questions designed
    to determine whether a person has a traumatic brain injury (TBI) or post-traumatic stress disorder
    (PTSD). Questions included one such as “[t]ell me about pain you experience.” Daigle testified
    he diagnosed Holcombe with complex PTSD based solely on self-reported statements that
    Holcombe had provided him.
    Pursuant to the standard provided in Nenno, we conclude the trial court did not abuse its
    discretion in determining that Daigle’s voir dire testimony was insufficient to establish the
    reliability of his proffered testimony. Under the first inquiry, whether the expert’s field of
    expertise is a legitimate one, the record is bare as to what a traumatologist is or does, other than
    Daigle’s testimony that a traumatologist “focuses primarily on all sorts of trauma and anything
    related to trauma,” and that the profession is “very rare.” Given the lack of specificity in Daigle’s
    testimony regarding his field of expertise, the trial court could have reasonably concluded that
    Daigle’s expertise as a traumatologist was not properly shown to be legitimate; in fact, we search
    in vain for any existing Texas case law in which a traumatologist was either proffered as an expert
    or allowed to testify. While we believe that the subject matter of Daigle’s proffered testimony
    would have been in the field of traumatology and mental health—given that Daigle would have
    testified about his diagnosis of Holcombe’s PTSD—we have no information in the record about
    11
    whether Daigle properly relied upon or utilized the principles involved in this field because Daigle
    failed to testify about what principles or techniques are utilized by traumatologists. The only
    information about what Daigle relied upon in his analysis was his single statement that he used
    techniques established by the VA National Center for Trauma consisting of open-ended questions.
    Since the record is otherwise bare as to whether this is an accepted method used by traumatologists,
    or mental health counselors generally, Holcombe did not establish that Daigle’s testimony properly
    relied upon or utilized the principles involved in traumatology or mental health counseling.
    Accordingly, under the Nenno standard, the record does not establish that the trial court abused its
    discretion in determining that Holcombe failed to establish the reliability of Daigle’s testimony by
    clear and convincing proof. See 
    Weatherred, 15 S.W.3d at 542
    (citing TEX. R. EVID. 702); 
    Harris, 424 S.W.3d at 601
    .
    Relevance
    The final condition we consider is relevance, or whether proffered expert testimony will
    actually assist the fact finder in deciding the case. 
    Vela, 209 S.W.3d at 131
    . Here, Daigle
    testified that he did not speak to Holcombe near the time of the commission of the offense, but
    only spoke with him in the preceding four or five months before trial, which took place almost two
    years later. When asked about what he had learned from his interview with Holcombe, Daigle
    testified that Holcombe had suffered from child abuse, and suffered symptoms from his military
    service which indicated the possibility of “dissociative characteristics.” According to Daigle,
    “dissociative” meant that a person was “not there,” such that a person might “remove [oneself]
    from the situation.” When asked by the trial court how many times he had met Holcombe, Daigle
    replied that he had met Holcombe “[n]ine or ten times. I don’t know exactly.” Daigle stated
    12
    Holcombe claimed he was not taking any medications at the time he interviewed him but was
    unsure of whether he had taken them in the past. He also stated that he did not know whether
    PTSD qualified as a severe disease or mental defect as defined by the Texas Penal Code.
    Critically, Daigle could not state that Holcombe’s alleged mental defect caused him to commit the
    offense, and while he stated there are times when Holcombe exhibited dissociative symptoms,
    Daigle could not provide an opinion on whether Holcombe knew right from wrong at the time of
    the events. In sum, Daigle himself stated he was unable to provide a specific opinion on whether
    there existed a connection between Holcombe’s alleged mental conditions and his commission of
    the charged offenses.
    Based on Daigle’s voir dire testimony, we conclude that the trial court did not abuse its
    discretion in excluding his testimony on relevance grounds. To successfully raise the affirmative
    defense of insanity, the defendant must show that, as a result of severe mental disease or defect,
    he did not know that his conduct during the commission of the offense was wrong. TEX. PENAL
    CODE ANN. § 8.01(a). While Daigle diagnosed Holcombe with PTSD and testified that Holcombe
    had a history of child abuse and dissociative symptoms, Daigle could not offer an opinion on
    whether Holcombe had a severe mental disease or defect within the meaning of Section 8.01(a),
    or whether that disease or defect caused him to commit the offenses charged. In other words, had
    Daigle testified before the jury, he would not have been able to connect Holcombe’s diagnoses to
    his alleged insanity defense. Lack of this critical link between the diagnoses and Holcombe’s
    claim that he was legally insane rendered Daigle’s testimony irrelevant. Likewise, Daigle could
    not give an opinion on whether Holcombe knew his conduct during the commission of the offenses
    was wrong, which also rendered his opinion unhelpful to the jury in resolving the issue of whether
    13
    Holcombe was legally insane.
    Thus, Daigle’s testimony would not have been helpful to the jury in determining whether
    Holcombe met the legal definition of insanity under Section 8.01(a), and the trial court did not err
    in excluding it on relevance grounds. See Nejnaoui v. State, 
    44 S.W.3d 111
    , 118 (Tex. App.—
    Houston [14th Dist.] 2001, pet. ref’d) (trial court did not err in excluding expert’s testimony not
    relevant to any issue before the jury given that expert testified she had no knowledge of the
    defendant’s mental state at the time of the commission of the offense).2
    Conclusion
    In sum, we conclude the trial court did not abuse its discretion in excluding Daigle’s
    proffered expert testimony. First, Daigle was not qualified to testify in this case because his
    credentials and knowledge did not enable him to give an opinion on whether Holcombe suffered
    from an alleged mental illness that was connected with the commission of the alleged offenses,
    and there was a corresponding lack of “fit” between his qualifications and proffered testimony.
    Second, Daigle’s testimony was too general to establish the reliability of his theories and the
    techniques he used. Third, Daigle’s testimony was irrelevant because it would not have been
    helpful to the jury in deciding the case since he could not give an opinion on whether Holcombe
    2
    Holcombe argues that the exclusion of testimony from Dr. Schutte and Daigle prevented him from being able to
    present evidence regarding his sole defensive theory. See Easley v. State, 
    424 S.W.3d 535
    , 540 (Tex. Crim. App.
    2014) (federal due process violation occurs only when (1) a state evidentiary rule categorically and arbitrarily prevents
    the defendant from offering otherwise relevant reliable evidence vital to his defense; or (2) the trial court’s clearly
    erroneous ruling results in the exclusion of admissible evidence that forms the vital core of a defendant’s theory of
    defense and effectively prevents him from presenting that defense). Yet, as the trial court noted when it ruled on
    Daigle’s testimony, she was “not suggesting that [Holcombe was] not able to put on [his] defense . . . [b]ut we’re
    talking about, specifically, this piece of evidence, this witness, and whether [Daigle] qualifies to be able to testify[.]”
    As such, Holcombe was not completely prevented from presenting a defense when the trial court excluded Dr.
    Schutte’s and Daigle’s testimonies on those grounds. For this reason, and because there is no state evidentiary rule
    which categorically or arbitrarily excluded the witnesses’ testimonies, the trial court’s ruling was not clearly erroneous
    and no federal due process violation of the right to present a defense occurred. See 
    id. 14 had
    a severe mental disease or defect within the context of an insanity defense, and he could not
    give an opinion on whether Holcombe knew his actions during the commission of the offense were
    wrong.
    Again, the trial court is vested with the responsibility of acting as a “gatekeeper” when
    addressing the qualifications, reliability, and relevance of expert testimony, and its decision to
    exclude testimony is rarely disturbed by appellate courts absent an abuse of discretion. 
    Vela, 209 S.W.3d at 136
    . Here, we conclude the record shows that the trial court acted within the zone of
    reasonable disagreement and did not abuse its discretion in excluding Daigle’s proffered
    testimony.
    Holcombe’s first issue is overruled.
    Dr. Schutte’s Testimony
    In Issue Two, Holcombe asserts the trial court erred when it excluded Dr. Schutte’s
    proffered expert testimony.      A trial court’s ruling on the admissibility of scientific expert
    testimony is reviewed for an abuse of discretion. 
    Weatherred, 15 S.W.3d at 542
    . A trial court
    abuses its discretion when its ruling falls outside the zone of reasonable disagreement.
    Montgomery v. State, 
    810 S.W.2d 372
    , 391 (Tex. Crim. App. 1990) (op. on reh’g). In determining
    whether the trial court abused its discretion in making evidentiary decisions, we do not substitute
    our judgment for that of the trial court because the trial court is in a superior position to evaluate
    the impact of the evidence. 
    Id. at 379.
    If the record supports the trial court’s decision on the
    admission (or exclusion) of evidence, there is no abuse of discretion and the trial court’s decision
    should be upheld. Osbourn v. State, 
    92 S.W.3d 531
    , 537-38 (Tex. Crim. App. 2002). To that
    end, a trial court does not abuse its discretion by excluding expert testimony that would not assist
    15
    the trier of fact in determining an issue before it. See 
    Nejnaoui, 44 S.W.3d at 117
    –18.
    On voir dire examination outside the presence of the jury, Dr. Schutte testified that he was
    a licensed psychologist in Texas and New Mexico. On the issue of what he had done in
    preparation for his testimony, Dr. Schutte stated that he had reviewed Holcombe’s Veteran’s
    Administration (VA) records, police records, the forensic interview with C.R., and a report from
    another doctor. He testified that he had evaluated Holcombe once in 2015 and again in 2016. He
    testified that he did not review any of Holcombe’s medical records from jail or any school records,
    nor did he speak to Holcombe’s family or friends. When asked what he considered when forming
    his opinion on Holcombe’s sanity, Dr. Schutte responded he had examined Holcombe’s history of
    mental health treatment, considered his two interviews with Holcombe, reviewed a variety of
    standardized psychological testing, and compared the information he gathered to the insanity legal
    standard.
    Ultimately, Dr. Schutte concluded that Holcombe did not meet the legal definition of
    insanity because Holcombe had indicated he was acting under the influence of alcohol, natural and
    synthetic marijuana, and possibly opiate pain medication, which he had voluntarily ingested near
    the time of the offense.       Dr. Schutte also testified he had diagnosed Holcombe with
    schizoaffective disorder and post-traumatic stress disorder (PTSD). Dr. Schutte further clarified,
    however, that he believed Holcombe did not know what he did was wrong—not because of the
    presence of these mental diseases—but due to his voluntary intoxication.
    Dr. Schutte also testified that it was possible that Holcombe had experienced a dissociative
    fugue (or dissociative amnesia), which is a disorder in which an individual engages in activities
    without remembering. According to Dr. Schutte, the period of lost memory could be for hours,
    16
    days, or even weeks, and this disorder qualifies as a severe mental disease consistent with
    requirements of the Texas Penal Code. Dr. Schutte testified that Holcombe had reported there
    were periods of time in which he had done things and not remembered doing them later.           Dr.
    Schutte also testified that in his 2015 interview with Holcombe, Holcombe told him that he did not
    recall anything regarding his contact with C.R., which in Dr. Schutte’s opinion “could be”
    consistent with dissociative amnesia.    Dr. Schutte also stated there were some dissociative
    elements in PTSD, and “there [were] elements of disassociation in [Holcombe’s] behavior, and
    potentially in the alleged offense.” Nevertheless, Dr. Schutte reiterated his opinion that he
    believed Holcombe did not know that his conduct was wrong because of his voluntary intoxication,
    and not because of the possible existence of Holcombe’s dissociative fugue.
    At the conclusion of the voir dire examination, the State objected to Dr. Schutte’s proffered
    testimony, arguing that it would be irrelevant during the guilt-innocence phase of trial because he
    was not going to testify that Holcombe did not know that his conduct was wrong, which the State
    asserted was required to establish an insanity defense under the Texas Penal Code. In particular,
    the State pointed to the fact that Dr. Schutte opined that Holcombe was unaware his conduct was
    wrong not based on a severe mental disease or defect, but rather on intoxication, which it argued
    does not constitute a defense to the commission of a crime. Trial counsel for Holcombe responded
    that whether Holcombe suffered from a severe mental disease is an issue of fact to be considered
    by the jury, and there was evidence that Holcombe suffered a dissociative fugue which could
    establish that Holcombe was temporarily insane at the time of the offenses.
    The trial court disagreed with Holcombe’s trial counsel, stating that the alleged mental
    issues do not create a fact issue for the jury to consider, and that Dr. Schutte testified that he
    17
    attributed Holcombe’s wrongful conduct to alcohol consumption, which is not a valid ground for
    asserting an insanity defense. The trial court then ruled that Dr. Schutte’s proffered testimony
    was not relevant and provided an insufficient basis to submit a jury instruction on insanity.
    On appeal, Holcombe argues the trial court abused its discretion in excluding Dr. Schutte’s
    testimony from the guilt-innocence portion of trial on relevance grounds. Although he concedes
    that voluntary intoxication is not a valid ground for establishing legal insanity, he contends the
    existence of his alleged mental disease or defect was critical to his defense. Nonetheless, he
    argues that the trial court erred when it excluded Dr. Schutte’s testimony that it was possible that
    Holcombe suffered from a dissociative fugue because it could establish that Holcombe was
    temporarily insane, and it was therefore relevant to his insanity defense.
    The State counters that because voluntary intoxication is not a valid defense to the
    commission of a crime, and because Dr. Schutte did not believe a dissociative fugue contributed
    to Holcombe’s alleged insanity, Dr. Schutte could not offer an opinion on whether Holcombe was
    legally insane at the time of the offense, and his testimony was therefore irrelevant. Stated
    differently, the State’s argument is that Dr. Schutte could not offer an opinion in determining a
    fact of consequence in the case (i.e., whether Holcombe was legally insane), and his testimony was
    therefore irrelevant and inadmissible under Rules 401 and 402. It also argues that Dr. Schutte’s
    testimony that it was “possible” that Holcombe suffered a dissociative fugue is too speculative to
    raise the defensive issue of insanity, relying on Jeffley v. State, 
    938 S.W.2d 514
    , 515–16 (Tex.
    App.—Texarkana 1997, no pet.), for that proposition. Likewise, the State contends that a “mere
    lack of memory does not raise, much less establish, an insanity defense.” Finally, the State argues
    that, assuming the trial court erred by excluding Dr. Schutte’s testimony, such exclusion was
    18
    harmless because Dr. Schutte’s proffered testimony would have had the effect of establishing the
    opposite of the defensive theory, namely, that Holcombe was not legally insane at the time of the
    offense.
    The situation we face is somewhat similar to that presented in 
    Nejnaoui, 44 S.W.3d at 117
    ,
    wherein the defendant challenged the trial court’s decision to exclude testimony from defendant’s
    former treating psychiatrist and a collection of excerpts from psychology texts pertaining to the
    subject of consciousness.    Specifically, defendant sought admission of testimony from his
    psychiatrist explaining the meaning of the words “aware” and “conscious.” 
    Id. Defendant argued
    that the psychiatrist’s testimony would have assisted the jury in evaluating his proffered
    defense that he was unaware of the consequences of his actions at the time he committed the
    charged offense.   Defendant contended the testimony and exhibits would assist the jury in
    determining whether he intentionally or knowingly committed the crime. 
    Id. In Nejnaoui,
    the Houston Court of Appeals upheld the trial court’s exclusion of the
    evidence, reasoning that the psychiatrist’s testimony would not be relevant to any issue before the
    jury because the defendant had not raised insanity as a defense, and by not raising insanity, the
    defendant had not properly raised a recognized defense. 
    Id. at 117–18
    (citing Thomas v. State,
    
    886 S.W.2d 388
    , 391 (Tex. App.—Houston [1st Dist.] 1994, pet. ref’d)). Nejnaoui concluded
    that the psychiatrist’s testimony that he may have lacked consciousness of his actions “would not
    be relevant to any issue before the jury because ‘we do not recognize any such defense as a legal
    justification for criminal acts.’” 
    Id. at 118
    (citing 
    Thomas, 886 S.W.2d at 391
    ). The Houston
    court also based its decision on the fact that the testifying expert had no knowledge of the
    defendant’s mental state during the commission of the offense. Id.; see also Thomas, 
    886 S.W.2d 19
    at 391 (trial court did not err in excluding expert testimony from a psychiatrist on the issue of
    intent when defendant did not plead insanity and attempted to raise a “hybrid defense” in which
    he claimed he was sane but nonetheless lacked intent, and reasoning that since this was not a legal
    defense, the expert’s testimony was not relevant to any issue before the jury).
    Likewise, in Teel, 
    2010 WL 4812994
    , at *2, the Fort Worth Court of Appeals upheld a trial
    court’s decision to exclude expert testimony for its lack of relevance to an insanity defense. In
    Teel, the court based its decision on the fact that the proffered expert had no opinion on whether
    the defendant was insane at the time of the offense. 
    Id. One immediately
    apparent distinction between Nejnaoui and Thomas, as compared to this
    case, is that Holcombe did raise insanity as a defense and attempted to rely entirely upon it as a
    defensive theory. Likewise, the issue in Nejnaoui and Thomas was not whether an expert’s
    testimony was relevant to the defendant’s insanity defense (as is the case here), but whether it was
    relevant to determining the culpable mental state element of the charged offenses. Another
    apparent difference is that, unlike the psychiatrists in Nejnaoui and Teel, Dr. Schutte did testify
    that he believed Holcombe was insane at the time he committed the offenses due to voluntary
    intoxication, and therefore, he had an opinion on Holcombe’s mental state during the relevant time
    period.
    Yet, one key similarity present in all these cases is that none of the testifying experts could
    offer testimony relevant to the central issue before the jury, namely, whether the defendant was
    legally insane at the time of the commission of the offense. In Nejnaoui and Thomas, the Houston
    courts reasoned that insanity was not an issue before the jury because neither defendant had
    properly raised the issue in those cases. In Teel, the Fort Worth court based its decision on the
    20
    fact that the expert would have testified about the defendant’s past mental illness as it existed
    before the offense, but the expert reportedly did not have an opinion on whether the defendant was
    legally insane at the time of the charged offense. Here, Dr. Schutte similarly testified that
    Holcombe was not legally insane due to his voluntarily intoxication. In sum, none of these experts
    were able to testify regarding the mental state of each defendant during the commission of the
    offenses, such that their testimony related to the relevant issue before the jury: whether the
    defendant was legally insane at the time of the offense.
    With Nejnaoui, Thomas, and Teel in mind, we conclude that the trial court did not abuse
    its discretion in excluding Dr. Schutte’s testimony after finding it was irrelevant to the issue of
    insanity. See 
    Nejnaoui, 44 S.W.3d at 117
    –18 (a trial court does not abuse its discretion in
    excluding expert testimony that will not assist the trier of fact in determining a fact of
    consequence); see also 
    Thomas, 886 S.W.2d at 391
    ; accord Teel, 
    2010 WL 4812994
    , at *2. The
    facts of consequence here included (1) whether Holcombe, by reason of severe mental illness or
    defect, (2) knew what he was doing was wrong at the time he committed the charged offenses. In
    his testimony, Dr. Schutte reported he had diagnosed Holcombe with PTSD and schizoaffective
    disorder. Moreover, he testified to the existence of a possible dissociative fugue, which may have
    been relevant to the severe mental disease or defect element of his insanity defense. Nevertheless,
    Dr. Schutte himself attributed Holcombe’s alleged insanity at the time of the offense to
    Holcombe’s voluntary intoxication on alcohol, marijuana, and possibly opiate medication, and not
    because of a serious mental disease or defect such as dissociative fugue, PTSD, or schizoaffective
    disorder.
    Because voluntary intoxication is not recognized as a valid defense to the commission of
    21
    an offense, Dr. Schutte could not offer a relevant opinion on whether Holcombe knew what he was
    doing was wrong at the time of the commission of the offense. While Dr. Schutte’s testimony
    that he had diagnosed Holcombe with PTSD and schizoaffective disorder may have been relevant
    to the severe mental disease or defect element of his insanity defense, this diagnosis would not
    have been relevant to establishing whether Holcombe knew what he was doing was wrong at the
    time of his commission of the offense. As such, the trial court did not abuse its discretion by
    determining that Dr. Schutte’s testimony would have been irrelevant and inadmissible under Rules
    401 and 402. See Teel, 
    2010 WL 4812994
    , at *2.
    We further conclude that the trial court did not abuse its discretion in excluding Dr.
    Schutte’s testimony regarding Holcombe’s possible dissociative fugue (and that he could not
    remember committing the offenses) because Dr. Schutte admitted that it did not contribute to his
    opinion regarding whether Holcombe knew what he was doing was wrong at the time of the
    commission of the offense. For the same reasons as Holcombe’s voluntary intoxication, Dr.
    Schutte’s proffered testimony on Holcombe’s possible dissociative fugue was not relevant to the
    issue before the jury. Further, a lack of memory alone is insufficient to raise an insanity defense,
    and the trial court could have reasonably concluded that Dr. Schutte’s testimony was too
    speculative to be of assistance to the jury. See Cato v. State, 
    534 S.W.2d 135
    , 136–38 (Tex. Crim.
    App. 1976) (lack of memory is insufficient evidence to require the submission of a jury instruction
    on insanity defense); 
    Jeffley, 938 S.W.2d at 516
    (expert testimony of a hypothetical possibility that
    defendant suffered from a lack of memory is insufficient to require submission of a jury instruction
    on insanity); Nutter v. State, 
    93 S.W.3d 130
    , 131–32 (Tex. App.—Houston [14th Dist.] 2001, no
    pet.) (holding that the existence of a mental disease, alone, does not establish legal insanity;
    22
    instead, the defendant must establish that he was mentally ill at the time of the offense to the point
    that he did not know his conduct was wrong).
    As a gatekeeper, the trial court is vested with the often-difficult duty of determining the
    admissibility of evidence, and to exclude evidence that is irrelevant or is likely to confuse the jury
    or make its decision-making unnecessarily difficult. See Coble v. State, 
    330 S.W.3d 253
    , 272
    (Tex. Crim. App. 2010). Since we cannot substitute our judgment for that of the trial court in
    determining whether it abused its discretion in making evidentiary decisions, we conclude that the
    trial court did not err in excluding Dr. Schutte’s testimony. As proffered, Dr. Schutte’s testimony
    was not relevant to Holcombe’s insanity defense and did not sufficiently raise a factual issue to
    justify a jury instruction.     Proffered testimony about Holcombe’s voluntary intoxication,
    dissociative fugue, and lack of memory, standing alone, did not help to establish a fact of
    consequence in the case: whether Holcombe, at the time of the commission of the offense, knew
    what he was doing was wrong. Therefore, we hold the trial court did not abuse its discretion in
    excluding Dr. Schutte’s testimony based on lack of relevance.
    Holcombe’s second issue is overruled.
    CONCLUSION
    Having overruled Holcombe’s two issues, we affirm the trial court’s judgment.
    GINA M. PALAFOX, Justice
    December 19, 2018
    Before Rodriguez, J., Palafox, J., and Larsen, J. (Senior Judge)
    Larsen, J. (Senior Judge), sitting by assignment
    (Do Not Publish)
    23