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2013 NV 90

Perez v. State

Nevada Supreme Court

Decided November 27, 2013

Nevada Supreme Court · decided 2013-11-27

Applies NV 174 § 174.234 · NV 200 § 200.366 · NV 201 § 201.230 · NV 48 § 48.015 · NV 48 § 48.025

Relies on Kotteakos v. United States · Townsend v. State · United States v. Montas

Decided 2013-11-27

                                                       
129 Nev., Advance Opinion 90
                       IN THE SUPREME COURT OF THE STATE OF NEVADA


                NOE ORTEGA PEREZ,                                      No. 55817
                Appellant,
                  vs.
                THE STATE OF NEVADA,
                Respondent.                                                        NOV 2 7 2013
                                                                                 TRACIE K LINDEMAN I
                                                                              CLEK. CV SUPREME cqup
                                                                             BY
                                                                                     DEPLIPTICERK


                            Appeal from a judgment of conviction, pursuant to ajury
                verdict, of six counts of lewdness with a child under 14 years of age and
                two counts of sexual assault of a minor under 14 years of age. Eighth
                Judicial District Court, Clark County; Michelle Leavitt, Judge.
                            Affirmed.


                David Phillips, Las Vegas,
                for Appellant.

                Catherine Cortez Masto, Attorney General, Carson City; Steven B.
                Wolfson, District Attorney, Steven S. Owens, Chief Deputy District
                Attorney, and James R. Sweetin, Deputy District Attorney, Clark County,
                for Respondent.

                Robert Arroyo and Amy Coffee, Las Vegas,
                for Amicus Curiae Nevada Attorneys for Criminal Justice.

                Richard A. Gammick and Terrence P. McCarthy, Reno,
                for Amicus Curiae Nevada District Attorneys Association.




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                                             fiAblishers.   e4'                    13 -3 5 .8 5o
                BEFORE THE COURT EN BANC.

                                                 OPINION
                By the Court, PARRAGUIRRE, J.:
                            In this appeal, we are concerned with the admissibility of
                expert testimony related to sex offender grooming behavior and the effect
                that behavior has on a child victim. "Grooming" generally describes
                conduct or actions by an offender that are undertaken to develop a bond
                between the victim and offender and, ultimately, make the victim more
                receptive to sexual activity with the offender. In particular, we address
                whether (1) the district court abused its discretion in concluding that the
                State's expert was qualified to offer grooming behavior testimony, (2) the
                expert's testimony improperly vouched for the complaining witness's
                testimony, and (3) the expert witness notice was insufficient.
                            As a general matter, we hold that whether expert testimony
                on grooming behavior is admissible in a case involving sexual conduct with
                a child must be determined on a case-by-case basis, considering the
                requirements that govern the admissibility of expert testimony. Those
                requirements include whether the particular expert is qualified to testify
                on the subject, whether the testimony is relevant and the product of
                reliable methodology such that it will assist the jury to understand the
                evidence or to determine a fact in issue, and whether the testimony is
                limited in scope to matters that are within the expert's specialized
                knowledge. Applying those considerations, we conclude that the district
                court did not abuse its discretion in admitting the expert testimony in this
                case. We further conclude that the expert's testimony did not improperly


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                vouch for the complaining witness's testimony and that the State's pretrial
                notice was sufficient. We therefore affirm the judgment of conviction.
                                 FACTS AND PROCEDURAL HISTORY
                            Appellant Noe Perez was convicted of six counts of lewdness
                with a minor under 14 years of age and two counts of sexual assault of a
                minor under 14 years of age, involving his niece. At trial, the victim
                testified that her relationship with Perez began to change after she turned
                13. He began calling her more and complimenting her, as well as winking
                at her when they attended the same parties. After driving her and a
                couple home one evening, Perez kissed the victim and touched her thigh
                when they were alone. He later called her and told her about a dream he
                had about undressing her and said that he was uncomfortable when she
                was close to other boys.
                            In September 2008, Perez invited the victim to accompany him
                and his wife, Maria, to Las Vegas, Nevada, for a concert. Perez's own
                children did not come on this trip. On the first evening, Perez played with
                the victim's feet under the table at dinner, hugged her while they walked
                along the street, and kissed the victim while Maria was in the shower.
                The next day, Perez again played with the victim's feet while she was
                swimming in the hotel pool, and the victim indicated that she wanted to
                spend time alone with Perez.
                            In the hotel room, Perez began kissing the victim after Maria
                had entered the bathroom and turned on the shower. Perez undressed the
                victim, kissed her breasts, rubbed her vaginal area, and penetrated her
                vagina with his fingers and tongue. Maria emerged from the shower and
                began screaming at Perez and the victim and slapping the victim. Hotel


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                security arrived shortly thereafter, and the victim told them that Perez
                had pinned her down and touched her. The victim testified that she told
                security that Perez forced her down because she feared Maria would leave
                her in Las Vegas. While Maria's reports to hotel security and responding
                officers were consistent with the victim's testimony, Maria testified that
                she only saw Perez kissing the victim, who was fully clothed.
                              Dr. John Paglini testified that the grooming relationship is a
                deceptive relationship with the intent of sexual contact. Dr. Paglini
                testified that an uncle touching his niece's foot under a table, winking at
                her, calling her and talking about how pretty she was, pulling her close
                while walking, touching her feet and arm in a swimming pool, touching
                her thigh, kissing her, showing concern for her spending time with other
                suitors, telling her about a dream in which he undressed her, and inviting
                her to attend an out-of-town concert with him could be construed as
                grooming behavior. In particular, he noted that showing concern for her
                spending time with other boys acts to isolate her from other intimate
                relationships and telling her about the dream is a method of probing her
                resistance to engaging in sexual behavior. The ultimate goal of such
                behavior is to establish a trusting relationship that lowers the child's
                resistance to engaging in sexual activity. Dr. Paglini also testified that
                whether a victim discloses abuse "is based upon the relationship to the
                perpetrator, the impact on the family and also the perceptions of the
                alleged victim regarding the people they're being interviewed on." Dr.
                Paglini noted that grooming typically results in lower rates of abuse
                disclosure.



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                                              DISCUSSION
                            The issues raised in this appeal involve expert testimony on
                "grooming" behavior. 1 The term "grooming" describes when an offender
                prepares a child for victimization by "getting close to [the] child, making
                friends with the child, becoming perhaps a confidant of the child, [and]
                getting the child used to certain kinds of touching, [and] play activities."
                State v. Stafford, 
972 P.2d 47
, 49 n.1 (Or. Ct. App. 1998) (quoting trial
                expert testimony). It can also include gifts, praises, and rewards, id.;
                State v. Hansen, 
743 P.2d 157, 160
 (Or. 1987), superseded by statute on
                other grounds as stated in Powers v. Cheeley, 
771 P.2d 622
, 628-29 n.13
                (Or. 1989), as well as exposure to sexual items and language, People v.
                Ackerman, 
669 N.W.2d 818, 825
 (Mich. Ct. App. 2003). This conduct is
                undertaken to develop an emotional bond between the victim and offender,
                Hansen, 
743 P.2d at 160
; Morris v. State, 
361 S.W.3d 649, 651
 (Tex. Crim.
                App. 2011), and may even lead the victim to feel responsible for his or her
                own abuse, Stafford, 
972 P.2d at 49
 n.1. The offender engages in
                grooming activity to reduce the child's resistance to sexual activity and
                reduce the possibility that the victim will report the abuse.    Ackerman,
                
669 N.W.2d at 824-25
.
                Expert qualification
                            Perez contends that the State failed to present sufficient
                evidence of Dr. Paglini's qualifications to testify as an expert. He

                      1 We invited the participation of amici curiae Nevada Attorneys for
                Criminal Justice (NACJ) and Nevada District Attorneys Association
                (NDAA) concerning the relevance and applicability of expert testimony
                about sex offender grooming.


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therefore argues that the district court abused its discretion in allowing
Dr. Paglini to testify as an expert on grooming activity.
            "The threshold test for the admissibility of testimony by a
qualified expert is whether the expert's specialized knowledge will assist
the trier of fact to understand the evidence or determine a fact in issue."
Townsend v. State, 
103 Nev. 113, 117
, 
734 P.2d 705, 708
 (1987); see NRS
50.275 ("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 special knowledge, skill, experience,
training or education may testify to matters within the scope of such
knowledge."). Expert testimony is admissible if it meets the following
three requirements, which we have described as the "qualification,"
"assistance," and "limited scope" requirements:
            (1) [the expert] must be qualified in an area of
            "scientific, technical or other specialized
            knowledge" (the qualification requirement); (2) his
            or her specialized knowledge must "assist the trier
            of fact to understand the evidence or to determine
            a fact in issue" (the assistance requirement); and
            (3) his or her testimony must be limited "to
            matters within the scope of [his or her specialized]
            knowledge" (the limited scope requirement).

Hallmark v. Eldridge, 
124 Nev. 492, 498
, 
189 P.3d 646, 650
 (2008) (second
alteration in original) (quoting NRS 50.275); see also Higgs v. State, 126
Nev. „ 
222 P.3d 648, 658
 (2010). We review a district court's
decision to allow expert testimony for an abuse of discretion. Hallmark,
124 Nev. at 498
, 
189 P.3d at 650
. As explained below, we conclude that
Dr. Paglini's testimony satisfied the three requirements identified in
Hallmark.



                                      6
                      Qualification requirement
                            Perez argues that there was nothing to indicate that Dr.
                Paglini had sufficient training or experience to assert an opinion as to the
                effect of grooming behaviors on the young victim. Further, Perez
                complains that this was the first time that Dr. Paglini had testified
                regarding grooming behaviors and he failed to establish that his findings
                were subjected to peer review or that he had received specialized training
                in the area of sex offender grooming behaviors. Amicus NACJ asserts that
                the record is insufficient to support a conclusion that Dr. Paglini was
                qualified to testify to grooming techniques as he had not published any
                scholarly articles or testified regarding grooming techniques in any
                proceeding prior to Perez's trial.
                            We have identified several nonexclusive factors that are useful
                in determining whether a witness "is qualified in an area of scientific,
                technical, or other specialized knowledge" and therefore may testify as an
                expert. Hallmark, 
124 Nev. at 499
, 
189 P.3d at 650
. Those factors include
                "(1) formal schooling and academic degrees, (2) licensure, (3) employment
                experience, and (4) practical experience and specialized training."   
Id. at 499
, 
189 P.3d at 650-51
 (footnotes omitted).
                            We conclude that Dr. Paglini's academic career and
                professional experience were sufficient to qualify him to testify as an
                expert on grooming behaviors and the effects of such behaviors on victims
                of sexual abuse. Dr. Paglini was formally educated in psychology. He held
                a bachelor's degree in psychology and a doctorate degree in clinical
                psychology. For the ten years prior to trial, Dr. Paglini "worked with
                family courts [conducting] child custody evaluations, dealing with the


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                issues of domestic violence or sex abuse allegations." During the eight
                years prior to trial, he conducted over 1,000 psychosexual evaluations on
                sex offenders. In conducting those evaluations, Dr. Paglini considered
                "variables like sex offending history, substance abuse problems, previous
                criminal problems. . . [and] the relationship of the offender and the
                victim." Thus, he spent the better part of his career studying the
                relationships between victims and offenders. In looking at these
                relationships, Dr. Paglini studied whether grooming by the offender
                occurred. Based on his formal schooling and academic degrees and his
                employment and practical experience, Dr. Paglini possessed the
                knowledge or experience necessary to render an opinion on grooming
                behaviors and the effects of such behaviors on victims of sexual abuse. See
                Morris, 
361 S.W.3d at 666-67
 ("A person can, through his experience with
                child-sex-abuse cases gain superior knowledge regarding the grooming
                phenomenon."); see also People v. Atherton, 
940 N.E.2d 775, 783, 790
 (Ill.
                App. Ct. 3d 2010) (child welfare supervisor who had worked as a sexual
                abuse therapist for over six years qualified to testify about child-sexualabuse-accommodation syndrome); Ackerman, 
669 N.W.2d at 824, 825
                (psychotherapist with master's degree in social work and who works with
                sex offenders and victims qualified); State v. Quigg, 
866 P.2d 655, 661
                (Wash. Ct. App. 1994) (expert with 13 years' experience in victims services
                unit, degree in child abuse and neglect, and numerous hours in intensive
                training and specialized workshops on child abuse, who had also
                conducted interviews with 3,000 victims qualified to testify about
                grooming). Other jurisdictions have concluded that witnesses with less
                academic preparation, see Haycraft v. State, 
760 N.E.2d 203, 210-11
 (Ind.


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                Ct. App. 2001) (detective with experience investigating sexual abuse cases
                and who attended training on sexual abuse was qualified as a "skilled
                witness" to discuss grooming); People v. Petri, 760 N.W,2d 882, 888 (Mich.
                Ct. App. 2008) (detective with 15 years of law enforcement experience and
                who received training in forensic interviews of children would have
                qualified to offer testimony about grooming), or less experience than Dr.
                Paglini, see Atherton, 
940 N.E.2d at 790
, were sufficiently qualified to offer
                expert testimony on grooming or the effect of abuse on child victims.
                            We next examine whether Dr. Paglini's grooming testimony
                satisfied the "assistance" requirement of NRS 50.275.
                      Assistance requirement
                            The "assistance" requirement asks whether the expert's
                "specialized knowledge will assist the trier of fact to understand the
                evidence or to determine a fact in issue." NRS 50.275. The "assistance"
                requirement has two components: whether the testimony is (1) relevant
                and (2) the product of reliable methodology. Hallmark, 
124 Nev. at 500
,
                
189 P.3d at 651
 ("An expert's testimony will assist the trier of fact only
                when it is relevant and the product of reliable methodology" (footnote
                omitted)). Although Perez only challenged Dr. Paglini's qualifications, at
                our invitation, amici briefed the relevance of expert testimony about sex
                offender grooming.
                            Relevance
                            Evidence is relevant when it tends "to make the existence of
                any fact that is of consequence to the determination of the action more or
                less probable." NRS 48.015. Generally, all relevant evidence is
                admissible. NRS 48.025. However, relevant evidence is not admissible if


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                its probative value is substantially outweighed by the danger of unfair
                prejudice or misleading the jury, or if it amounts to needless presentation
                of cumulative evidence. NRS 48.035.
                            Amicus NACJ contends that Dr. Paglini's testimony was not
                particularly probative because the issue for the jury to decide was whether
                Perez committed the charged acts, not his intent during the purported
                grooming activity. Further, NACJ argues, what probative value the
                testimony may have had was outweighed by the danger of unfair prejudice
                as the testimony compared Perez's behavior to the known behavior of sex
                offenders and created a distinct impression that Perez was a sex offender. 2
                Amicus NDAA argues against a broad rule that would prohibit expert
                testimony about sex offender grooming and instead urges a case-by-case
                approach.
                            We conclude that expert testimony on grooming behaviors and
                its effect on child victims of sexual abuse may be relevant depending on
                the circumstances of the case. Dr. Paglini's testimony, under the
                circumstances in this case, was relevant. The victim testified that Perez
                engaged in seemingly innocuous flirtatious behavior and sexual
                discussions that finally escalated into more overt sexual contact, which is


                      2 The NACJ also contends that the State should not have been able
                to introduce an expert opinion as to Perez's mens rea. We disagree. See
                NRS 50.295 ("Testimony in the form of an opinion or inference otherwise
                admissible is not objectionable because it embraces an ultimate issue to be
                decided by the trier of fact"); Townsend, 
103 Nev. at 118
, 
734 P.2d at 708
                (noting that an expert may give an opinion on issues that embrace the
                ultimate issue to be decided by the trier of fact so long as it is within scope
                of expertise).


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                not unlike a dating relationship. This trajectory of behavior seems to
                indicate even to the lay juror a definite design on engaging in sexual
                conduct with the victim and may suggest that expert testimony would be
                unnecessary to explain his designs. See United States v. Raymond, 
700 F. Supp. 2d 142, 150-51
 (D. Me. 2010) ("Expert' testimony about matters of
                common sense is not helpful to a jury and carries the risk of unfair
                prejudice . ."). However, it was not immediately apparent how Perez's
                behavior affected the victim. Notably, the victim appeared to acquiesce to
                the abuse and later gave inconsistent reports about that abuse. The
                victim's conduct leading up to the abuse and her inconsistent reports after
                the abuse could have been influenced by Perez's prior fawning, the fear of
                Maria's reaction to the conduct, and later counseling. Therefore, Dr.
                Paglini's testimony that the goal of grooming is to reduce the resistance to
                the abuse as well as the likelihood of disclosure was beneficial to the jury
                in evaluating the evidence of abuse and assessing the victim's credibility.
                See United States v. Hitt, 
473 F.3d 146, 158-59
 (5th Cir. 2006) (finding no
                abuse of discretion by district court admission of expert grooming
                testimony to explain "return-to-the-abuser behavior"); Jones v. United
                States, 
990 A.2d 970, 978
 (D.C. 2010) ("The testimony helped to explain
                not only how a child molester could accomplish his crimes without
                violence, but also why a child victim would acquiesce and be reluctant to
                turn against her abuser."); Howard v. State, 
637 S.E.2d 448, 451
 (Ga. Ct.
                App. 2006) (admitting evidence of grooming, even if it incidentally places
                defendant's character in issue, to explain victim's unwillingness to disclose
                abuse); Ackerman, 
669 N.W.2d at 825-26
 (recognizing that most jurors
                lack knowledge of the conduct of sexual abusers and thus expert testimony


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                regarding grooming behavior was helpful); State v. Berosik, 
214 P.3d 776, 782-83
 (Mont. 2009) (admitting expert testimony about grooming as
                relevant to assessing victim credibility); see also Smith v. State, 
100 Nev. 570, 572-73
, 
688 P.2d 326, 327
 (1984) (holding that expert testimony about
                family dynamics related to sexual abuse is relevant to help the jury
                understand "superficially unusual behavior of the victim and her mother").
                            As to unfair prejudice, Dr. Paglini's testimony did not stray
                beyond the bounds set by this court and other jurisdictions for expert
                testimony. Dr. Paglini generally addressed how grooming occurs and its
                purpose. He then offered insight in the form of hypotheticals that were
                based on Perez's conduct and indicated that such conduct was probably
                grooming behavior. See Shannon v. State, 
105 Nev. 782, 787
, 
783 P.2d 942, 945
 (1989) (providing that experts can testify to hypotheticals about
                victims of sexual abuse and individuals with pedophilic disorder). He did
                not offer an opinion as to the victim's credibility or express a belief that
                she had been abused. See Townsend, 
103 Nev. at 118-19
, 
734 P.2d at 708
-
                09. Dr. Paglini's testimony therefore meets the first component of the
                "assistance" requirement.
                            Reliability of methodology
                            This court has articulated five factors to use in evaluating the
                second component of the "assistance" requirement—whether an expert's
                opinion is the product of reliable methodology. These factors include
                            whether the opinion is (1) within a recognized field
                            of expertise; (2) testable and has been tested; (3)
                            published and subjected to peer review; (4)
                            generally accepted in the scientific community (not
                            always determinative); and (5) based more on


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                            particularized facts rather than assumption,
                            conjecture, or generalization.

                Hallmark, 
124 Nev. at 500-01
, 
189 P.3d at 651-52
 (footnotes omitted).
                These "factors may be afforded varying weights and may not apply equally
                in every case." Higgs v. State, 126 Nev. „ 
222 P.3d 648, 660
 (2010).
                            Considering the applicable factors, we conclude that Dr.
                Paglini's opinion was the product of reliable methodology. In particular,
                Dr. Paglini practices in a recognized field of expertise, see Ackerman, 
669 N.W.2d at 824, 825
 (noting that psychotherapist who works with sex
                offenders is "clearly qualified in a recognized discipline"); Morris, 
361 S.W.3d at 656
 (recognizing study of behavior of sex offenders to be a
                legitimate field of expertise), and he testified about a phenomenon that
                courts have recognized as generally accepted in the scientific community,
                see Morris, 
361 S.W.3d at 668
 (concluding that grooming as a phenomenon
                exists); see also State v. Stafford, 
972 P.2d 47, 54
 (Or. Ct. App. 1998)
                (noting that observations about grooming behavior not drawn from testing
                or scientific methodology but derived from personal observations made in
                light of education, training, and experience constituted admissible
                evidence based on specialized knowledge); Bryant v. State, 
340 S.W.3d 1, 9
                (Tex. Crim. App. 2010) (same). Although he testified about the general
                nature of grooming, his testimony indicated that he had based this on
                specific facts observed in his practice and applied it to the specific
                circumstances of this case. However, the record does not indicate that Dr.
                Paglini's opinion had been subject to peer review or was testable or had
                been tested. While Dr. Paglini's methodology did not meet two of the
                Hallmark factors, those factors are not as weighty given the nature and


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                subject matter of his opinion testimony. See Higgs, 126 Nev. at         , 
222 P.3d at 660
.
                               Finally, we must determine if Dr. Paglini's expert opinion was
                limited to the area of his expertise. Hallmark, 
124 Nev. at 498
, 
189 P.3d at 650
.
                      Limited scope requirement
                               Perez argues that Dr. Paglini's testimony about neurological
                development was outside the scope of his proposed testimony and that the
                State failed to show that he had received neurological training. We agree.
                Dr. Paglini's testimony, for the most part, proceeded within the scope of
                his expertise. He testified about the phenomenon of grooming and its
                effect on the victim. However, during a digression, Dr. Paglini testified
                regarding adolescent neurological development. As Dr. Paglini had not
                demonstrated any specialized knowledge in neuroscience or adolescent
                neurological development, this part of his testimony exceeded the scope of
                his specialized knowledge.      See Kelly v. State, 
321 S.W.3d 583, 600-01
                (Tex. Crim. App. 2010) (concluding that expert who lacked medical
                training was not qualified to testify about grooming when her testimony
                was predicated on detailed medical information). However, Perez did not
                object to this digression on the basis that it exceeded the scope of Dr.
                Paglini's qualifications. Because Dr. Paglini's digression was brief, as
                compared to the whole of his testimony, we conclude that it did not
                amount to plain error. See Gallego v. State, 
117 Nev. 348, 365
, 
23 P.3d 227, 239
 (2001) (reviewing for plain error where party fails to object at
                trial), abrogated on other grounds by Nunnery v. State, 127 
Nev. , n.12, 263 P.3d 235
, 253 n.12 (2011).


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                Vouching
                              Perez also contends that Dr. Paglini's testimony impermissibly
                bolstered the victim's testimony and therefore the district court abused its
                discretion in admitting it. We disagree.
                              A witness may not vouch for the testimony of another or
                testify as to the truthfulness of another witness. Lickey v. State, 
108 Nev. 191, 196
, 
827 P.2d 824, 827
 (1992). Although an expert may not comment
                on whether that expert believes that the victim is telling the truth about
                the allegations of abuse, Townsend, 
103 Nev. at 118-19
, 
734 P.2d at 709
;
                see also Lickey, 
108 Nev. at 196
, 
827 P.2d at 827
 (noting that expert
                commentary on the veracity of the victim's testimony invades the
                prerogative of the jury), Nevada law allows an expert to testify on the
                issue of whether a victim's behavior is consistent with sexual abuse, if that
                testimony is relevant, see Townsend, 
103 Nev. at 118
, 
734 P.2d at 708
;
                NRS 50.345 ("In any prosecution for sexual assault, expert testimony is
                not inadmissible to show that the victim's behavior or mental or physical
                condition is consistent with the behavior or condition of a victim of sexual
                assault.").
                              Dr. Paglini did not vouch for the victim's veracity. He offered
                a general opinion about the effect of grooming on a child victim of sexual
                abuse. He did not offer a specific opinion as to whether he believed that
                the victim in this case was telling the truth. "[T]he fact that such evidence
                is incidentally corroborative does not render it inadmissible, since most
                expert testimony, in and of itself, tends to show that another witness
                either is or is not telling the truth." Davenport v. State, 
806 P.2d 655, 659
                (Okla. Crim. App. 1991); see Townsend, 
103 Nev. at 118-19
, 734 P.2d at


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                709 (acknowledging that "expert testimony, by its very nature, often tends
                to confirm or refute the truthfulness of another witness" but that relevant
                testimony by a qualified expert within that expert's field of expertise is
                admissible "irrespective of the corroborative or refutative effect it may
                have on the testimony of a complaining witness" so long as the expert does
                not "directly characterize a putative victim's testimony as being truthful
                or false"); Bryant, 
340 S.W.3d at 10
 ("The information about grooming
                could have influenced the jury's credibility determinations, but only in an
                indirect fashion."). Therefore, the district court did not abuse its
                discretion in admitting the testimony.
                Sufficiency of expert witness notice
                             Last, Perez contends that the State's notice of expert
                testimony was inadequate and therefore the district court should have
                precluded the State from calling Dr. Paglini. We disagree.
                             The State filed its notice of witnesses over one month before
                the start of trial. See NRS 174.234(2) (requiring State to provide notice of
                expert witnesses at least 21 days prior to trial). To comply with NRS
                174.234(2), the notice had to include: "(a) A brief statement regarding the
                subject matter on which the expert witness is expected to testify and the
                substance of the testimony; (b) A copy of the curriculum vitae of the expert
                witness; and (c) A copy of all reports made by or at the direction of the
                expert witness." The State's notice in this case indicated that Dr. Paglini
                would "testify as to grooming techniques used upon children" and included
                his curriculum vitae. Dr. Paglini's curriculum vitae indicated that he had
                conducted sexual offender assessments on adult offenders and sexual
                offense and violence risk assessments on juveniles. The State did not


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submit any reports produced by Dr. Paglini because he did not prepare
any reports related to the litigation. Perez's brief argument does not
allege that the State acted in bad faith or that his substantial rights were
prejudiced because the notice did not include a report or more detail about
the substance of Dr. Paglini's testimony.                 See Mitchell v. State, 
124 Nev. 807, 819
, 
192 P.3d 721, 729
 (2008). Under the circumstances, we discern
no abuse of discretion in allowing Dr. Paglini to testify.                 See 
id.
 ("This
court reviews a district court's decision whether to allow an unendorsed
witness to testify for abuse of discretion.").
              Having rejected Perez's challenges to the admission of Dr.
Paglini's testimony, we affirm the judgment of conviction. 3


                                                   V.S0




                                             Parraguirre




                                        J.
Hardesty


                A   rgeoskowsoor..410
                                        J.
Saitta


         3 We deny Perez's motion to strike NACJ's request for a remand for

additional supplementation of the record as moot.




                                              17
                DOUGLAS, J., with whom PICKERING, C.J., and CHERRY, J., agree,
                concurring in part and dissenting in part:
                            I concur with the majority's conclusion that the admissibility
                of expert testimony about grooming should be decided on a case-by-case
                basis under NRS 50.275 and Hallmark v. Eldridge, 
124 Nev. 492
, 
189 P.3d 646
 (2008). However, such testimony should be admitted in rare
                circumstances, and I disagree that this case warrants its admission. The
                State did not introduce sufficient specific evidence that Dr. Paglini was
                qualified to discuss grooming of child victims by sex offenders, and his
                testimony did not assist the jury in understanding the victim's actions and
                unfairly prejudiced Perez. I also disagree with the majority's conclusion
                that the expert-witness notice was sufficient.
                Admission of expert testimony
                            Expert testimony is admissible if it meets three requirements,
                which we have described as the "qualification," "assistance," and "limited
                scope" requirements:
                            (1) [the expert] must be qualified in an area of
                            "scientific, technical or other specialized
                            knowledge" (the qualification requirement); (2) his
                            or her specialized knowledge must "assist the trier
                            of fact to understand the evidence or to determine
                            a fact in issue" (the assistance requirement); and
                            (3) his or her testimony must be limited "to
                            matters within the scope of [his or her specialized]
                            knowledge" (the limited scope requirement).

                Hallmark, 
124 Nev. at 498
, 
189 P.3d at 650
 (second alteration in original)
                (quoting NRS 50.275); see also Higgs v. State, 126 Nev.       ,    , 
222 P.3d 648, 658
 (2010). As I explain below, the State failed to put forth sufficient


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                evidence to demonstrate that Dr. Paglini was qualified to offer expert
                testimony and the testimony that he provided failed to assist the jury.
                      Expert qualifications
                            The majority concludes that Dr. Paglini's academic career and
                professional experience were sufficient to qualify him to offer the
                testimony on the grooming phenomenon. It notes that Dr. Paglini is a
                clinical psychologist who had conducted child custody evaluations, pretrial
                competency evaluations, death penalty evaluations, and psychosexual
                evaluations. However, Dr. Paglini did not identify how many of his prior
                evaluations involved child victims of sexual abuse or grooming, and he had
                not written any treatises or articles on the phenomenon.
                            Dr. Paglini's principal qualification, according to his
                testimony, was his work preparing "risk assessments" for use in
                sentencing convicted sex offenders. "[I]t's my job as a psychologist. . . to
                educate the judge on the history of the defendant, what their violent
                history and sex offender history is" so the court can "understand what the
                risk of reoffending is towards a community" in sentencing. Continuing,
                Dr. Paglini testified, "You're looking at certain variables like sex offending
                history . . . . Was there grooming involved, and what was the grooming?"
                Notably absent from Dr. Paglini's testimony about his qualifications was
                any reference to work with victims of grooming. Rather, the focus was—
                and remained—on what sex offenders do that can constitute grooming.
                            Grooming testimony is permissible in certain child-sex-abuse
                cases, normally to explain the impact the grooming had on the victim's
                behavior in terms of delayed reporting and the like.        See NRS 50.345
                ("expert testimony is not inadmissible" in sexual assault cases when

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                offered to show "the behavior or condition of a victim of sexual assault").
                But here, the record does not show Dr. Paglini's qualification to address
                the impact on the victim of grooming activity. He thus did not
                demonstrate with sufficient specificity that his formal schooling,
                employment experience, or practical experience qualified him to testify
                about grooming and its impact on the victim in this case. See Hallmark,
                
124 Nev. at 499
, 
189 P.3d at 650-51
; see also NRS 50.275; Jones v. United
                States, 
990 A.2d 970, 975, 978-80
 (D.C. 2010) (former FBI agent who
                studied 400 to 500 cases of sexual abuse involving teenage victims as well
                as published writing in manuals on sexual abuse and the behavior of child
                molesters qualified); Morris v. State, 
361 S.W.3d 649, 668
 (Tex. Crim. App.
                2011) (recognizing that law enforcement officer "with a significant amount
                of experience with child sex abuse cases may be qualified" to discuss
                grooming).
                             Although this court has not specified the requirements for
                admitting expert testimony about grooming, I would have preferred a
                more thorough record for reviewing the district court's exercise of
                discretion, including the link between his expertise and the subject matter
                of the testimony being offered to assist the jury in this case.
                      Assistance
                             The record further fails to demonstrate that Dr. Paglini's
                testimony was sufficiently relevant to have assisted the jury.    See NRS
                50.275 (requiring that expert testimony assist the jury to "understand the
                evidence or to determine a fact in issue"); Hallmark, 
124 Nev. at 500
, 
189 P.3d at 651
 (requiring that expert testimony be "relevant and the product
                of reliable methodology" (footnote omitted)). The majority notes that

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                Perez's behavior and conduct with the victim began as mildly flirtatious
                and escalated to the point of being overtly sexual. I agree with the
                majority that Perez's actions needed no expert explanation in and of
                themselves as his designs for engaging in sexual conduct with the victim
                were evident from the escalating nature of his actions. However, I part
                from the majority's conclusion that expert testimony was necessary to
                explain the effect of Perez's actions on the victim.
                            The testimony was not of assistance because the victim could,
                and in fact did, explain how Perez's conduct allayed her resistance to his
                abuse. The victim, who was 14 years old at the time of trial, testified
                about events that occurred only the year before, described how the
                grooming activity made her feel, and acknowledged that she developed
                feelings for Perez. Further, she did not resist Perez's physical advances
                because of these feelings. In addition, she explained her hesitance to fully
                and accurately disclose the nature of Perez's abuse. Remarkably, her
                resistance to disclosing the abuse turned on fear of her aunt's reaction, not
                the effects of Perez's grooming. Because the victim explained during her
                testimony that Perez's conduct ingratiated himself to her and, to some
                extent, beguiled her, see Morris, 
361 S.W.3d at 652, 667
 (describing
                grooming behavior as "really no different from behavior that occurs in
                high school dating"), the expert testimony was unnecessary, see United
                States v. Raymond, 
700 F. Supp. 2d 142, 152
 (D. Me. 2010) (noting that
                expert testimony on motivation of child victim is not required when victim
                can testify about her motivations); State v. Braham, 
841 P.2d 785, 790
                (Wash. Ct. App. 1992) ("Surely, expert opinion is not necessary to explain
                that an adult in a 'close relationship' with a child will have greater

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                opportunity to engage in the alleged sexual misconduct."). While this
                court tolerates expert testimony that       incidentally bolsters another
                witness's testimony, see Townsend v. State, 
103 Nev. 113, 118-19
, 
734 P.2d 705, 709
 (1987) (recognizing that expert testimony may have a
                corroborative effect on the complaining witness's testimony), the testimony
                here primarily served to augment the victim's testimony.
                            As the expert testimony was not probative with regard to the
                victim's actions, it became unfairly prejudicial in how it characterized
                Perez's behavior. Unnecessary expert testimony carries the risk of unduly
                influencing the jury:
                            Expert testimony on a subject that is well within
                            the bounds of a jury's ordinary experience
                            generally has little probative value. On the other
                            hand, the risk of unfair prejudice is real. By
                            appearing to put the expert's stamp of approval on
                            the government's theory, such testimony might
                            unduly influence the jury's own assessment of the
                            inference that is being urged.
                United States v. Montas, 
41 F.3d 775, 784
 (1st Cir. 1994); see also
                Raymond, 
700 F. Supp. 2d at 150
 (noting that expert witness testimony
                about matters in the jury's common sense "invites a toxic mixture of
                purported expertise and common sense"). Although expert insight into the
                effect of grooming behavior, i.e., the victim's emotional dependence on the
                abuser, may have appeared relevant to understanding the victim's
                reluctance to come forward, testimony about the defendant's prior bad
                acts, which may have fostered that emotional dependence, did not explain
                the victim's behavior and carried a significant risk of unfair prejudice to
                the defendant by characterizing his prior actions as similar to those of


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                   other sex offenders. See State v. Hansen, 
743 P.2d 157, 160-61
 (Or. 1987),

             QS'   superseded on other grounds by Or. Evidence Code R. 103A as stated in
                   Powers v. Cheely, 
771 P.2d 622
, 628 n.13 (Or. 1989). Thus, where expert
                   testimony addresses a defendant's prior bad acts, "[c]are must be taken in
                   order that prior acts evidence is not bundled into an official-sounding
                   theory and coupled with expert testimony in order to increase its apparent
                   value in demonstrating a 'plan' or malevolent intent by the defendant."
                   State v. Coleman, 
276 P.3d 744, 750
 (Idaho Ct. App. 2012).
                               Apart from his testimony about the impulsivity of adolescents
                   due to lack of cortical function in the frontal lobes of the brain—testimony
                   the majority correctly concludes Dr. Paglini was not qualified to give—Dr.
                   Paglini said very little about grooming's impact on victim behavior that,
                   left unexplained, would confuse the jury. Rather, Dr. Paglini was asked to
                   define grooming and then to answer a series of purported hypotheticals,
                   such as, "You have a situation of a 13-year-old niece who had known her
                   33-year-old uncle her whole life and had seen him on a regular basis,
                   would the following conduct over about a three and four month period
                   potentially constitute grooming activity? First touching the niece's foot
                   under the table at family parties or winking at the niece." There follows a
                   series of hypothetical questions, each one identifying something the
                   defendant did in relation to the victim, such as calling her, objecting to her
                   having boyfriends, and concluding it might be grooming. Such testimony
                               exceeded permissible bounds when the prosecutor
                               tailored the hypothetical questions to include facts
                               concerning the abuse that occurred in this
                               particular case. [It] went beyond explaining
                               victim behavior that might be beyond the ken of a


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                           jury, and had the prejudicial effect of implying
                           that the expert found the testimony of this
                           particular claimant to be credible.
                People v. Williams, 
987 N.E.2d 260, 263
 (N.Y. 2013); see State v.
                McCarthy, 
283 P.3d 391, 394-95
 (Or. App. 2012).
                            Here, Dr. Paglini focused on Perez's uncharged bad (and, in
                some instances, perhaps innocent) acts and characterized them as
                motivated purely by his intent to sexually abuse his niece. The testimony
                carried a significant risk that the jury would "make the quick and
                unjustified jump from his expert testimony about behavioral patterns to
                guilt in a particular case that shows similar patterns." Raymond, 
700 F. Supp. 2d at 150
; see also Hansen, 
743 P.2d at 161
 (noting that where
                probative value is lacking, "the danger of unfair prejudice to defendant
                from the unwarranted inference that, because defendant engaged in acts
                that sexual child abusers engage in, she, too, is a sexual child abuser is
                simply too great"). Thus, even if the testimony had some limited probative
                value, NRS 48.015, that value was substantially outweighed by the danger
                of unfair prejudice, NRS 48.035(1).
                            Considering that the State failed to elicit sufficient
                information regarding Dr. Paglini's qualifications and the victim was able
                to articulate how Perez's prior conduct affected her, I would conclude that
                the district court abused its discretion in admitting this testimony. I
                reiterate that I am not opposed to the use of expert testimony on grooming
                in all cases. It certainly becomes more relevant where the grooming
                activity in question is not clearly apparent or the child witness is of such
                an age that he or she could not plainly express how that activity affected


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                him or her. Nevertheless, in that situation, the State must make a
                sufficient showing that the expert has sufficient academic or professional
                experience specifically related to grooming of child sexual assault victims.
                Expert-witness notice
                            I further disagree with the majority's conclusion that the
                expert-witness notice was adequate to inform the defendant of the extent
                of testimony that the State sought to elicit. NRS 174.234(2) requires
                pretrial disclosure of experts in cases involving gross misdemeanor or
                felony charges. The disclosure must, at minimum, give "[a] brief
                statement regarding the subject matter on which the expert witness is
                expected to testify and the substance of the testimony." NRS 174.234(2)(a)
                (emphasis added). The State's expert-witness disclosure designated Dr.
                Paglini and stated he would "testify as to grooming techniques used upon
                children," nothing more. This notice was far too brief, and while it
                identified the subject matter of the testimony in the broadest of terms, it
                did not sufficiently address the substance of that testimony. As noted
                above, most of Dr. Paglini's direct testimony involved his opinion of
                hypothetical scenarios posed by the prosecutor that mirrored the specific
                facts of this case. The notice did not inform Perez that the State sought
                Dr. Paglini's opinion on these matters. Further, the notice did not inform
                the defense that Dr. Paglini had reviewed materials specific to this case,
                including the victim's statements, reports, and transcripts of other
                hearings. Therefore, Dr. Paglini's testimony about the specific conduct at
                issue in this case ambushed Perez with expert testimony he was not
                warned to be prepared to defend against.



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                Harmless error
                            I further conclude that the error in admitting Dr. Paglini's
                testimony was not harmless. See Fields v. State, 
125 Nev. 776, 784
, 
220 P.3d 724, 729
 (2009) (reviewing erroneous admission of evidence for
                harmless error). In considering whether the erroneous admission of
                evidence had a "substantial and injurious effect or influence in
                determining the jury's verdict," Tavares V. State, 
117 Nev. 725, 732
, 
30 P.3d 1128, 1132
 (2001) (quoting Kotteakos v. United States, 
328 U.S. 750, 776
 (1946)), this court considers "whether the issue of innocence or guilt is
                close, the quantity and character of the error, and the gravity of the crime
                charged." Big Pond v. State, 
101 Nev. 1, 3
, 
692 P.2d 1288, 1289
 (1985).
                            This case is impacted by all three factors. First, the question
                of guilt or innocence is close. The testimony supporting the charges was
                inconsistent. The victim's testimony was inconsistent with her initial
                reports to hotel security and the police. Perez's wife, whose initial reports
                to hotel security and the police supported the allegations of abuse, testified
                consistently with Perez's admission that he kissed the victim. No physical
                evidence supported the allegations. Second, the character of the error was
                particularly damaging in this case. Expert testimony which rationalized
                the inconsistencies in the victim's testimony had a significant impact on
                the jury's determination of guilt. The problem was exacerbated by the
                emphasis Dr. Paglini and the State placed on Dr. Paglini's work
                conducting "risk assessments" on known sex offenders. Proceeding act by
                act through hypothetical questions concerning the flirtations that
                preceded the Las Vegas assault portrayed Perez as a sex offender, on a par
                with the 1,000 other convicted sex offenders of risk to the community Dr.

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                Paglini had evaluated. But Perez was not on trial for grooming over a
                three to four month period in California. The charges he faced involved a
                single incident in a Las Vegas hotel room that occurred in the space of
                time it took Perez's wife, the victim's aunt, to take a shower in the room's
                adjacent bathroom. Lastly, Perez was charged with serious sexual offenses
                against a minor, for which he has been sentenced to multiple life
                sentences, with the possibility of parole after 35 years.         See NRS
                200.366(3)(c); NRS 201.230(2).
                            Accordingly, I would reverse the judgment of conviction and
                remand for a new trial.



                                                                                   J.




                I concur:



                                            , C.J.
                Pickering




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