Ch. 3: Eyewitness Identifications (Sept. 2014) 3-31
Role of the expert in eyewitness identification cases. Eyewitness experts typically
provide background information about factors influencing eyewitness accuracy. See, e.g.,
MISTAKEN IDENTIFICATION at 19. An expert witness may not offer testimony as to the
credibility of a witness. See generally State v. Ryan, __ N.C. App. __, 734 S.E.2d 598,
603 (2012) (in the absence of a proper foundation, an expert may not testify as to whether
sexual abuse in fact occurred, as such testimony amounts to opinion on credibility of
victim); see also State v. Stancil, 355 N.C. 266 (2002) (same). In the context of cross-
racial identifications, experts cannot testify as to the accuracy of a particular cross-racial
identification, since “the evidence . . . suggests that once a suspect has been selected from
a lineup by an eyewitness, there is no known way to make a useful judgment about the
likelihood that the eyewitness is correct.” Steven M. Smith et al., Postdictors of
Eyewitness Errors: Can False Identifications be Diagnosed in the Cross-Race Situation?,
7 PSYCHOL. PUB. POL’Y & L. 153, 166 (2001). Nevertheless, the context provided by an
expert would assist jurors in evaluating the accuracy of the eyewitness’s identification.
Case specific expert testimony. North Carolina courts may be more receptive to expert
testimony on eyewitness identification when it is “case specific.” In three cases, the
North Carolina Court of Appeals upheld the exclusion of expert testimony on eyewitness
identification where the trial court found that the proffered testimony was insufficiently
tied to the facts of the case. See State v. Lee, 154 N.C. App. 410, 417 (2002); State v.
Suddreth, 105 N.C. App. 122, 134 (1992); State v. Knox, 78 N.C. App. 493, 495–96
(1985). Thus, the court in Lee observed that although expert testimony “may be
appropriate in some cases,” it was not warranted in this case where the expert had “not
interviewed the victims, did not visit the crime scene, and did not observe any of the
eyewitnesses’ testimony at trial.” Lee, 154 N.C. App. 410, 417 (also discussing other
factors that supported trial judge’s ruling). Similarly, when reviewing the admissibility of
expert testimony on eyewitness identification, courts in other jurisdictions have examined
the “fit” between the testimony offered and the facts of the case. See, e.g., United States
v. Dowling, 855 F.2d 114, 118 (1988), aff’d, 493 U.S. 342 (1990); United States v.
Harris, 995 F.2d 532, 535 (4th Cir. 1993). For example, testimony regarding weapon
focus may properly be excluded where it is not linked to evidence about the presence of
weapons at the time the eyewitness observed the perpetrator and, therefore, would not
assist the jury. Dowling, 855 F.2d 114, 119. Defenders should ensure that the proposed
expert testimony bears a close relationship to the facts of the case and that the expert has
familiarized him or herself with the facts of the case before testifying. Although the
defense does not have a right to have an expert interview the victim, our expanded
discovery statutes ensure that the defense will be able to obtain, and an expert will be
able to review, any statements of the victim or notes or other materials reflecting the
victim’s observations.
Indigent defendants entitled to appointment of experts. Indigent defendants are
entitled to the assistance of counsel and other necessary expenses, including expert
assistance. G.S. 7A-450(b); G.S. 7A-454; State v. Tatum, 291 N.C. 73 (1976). Defenders
in cases involving cross-racial identifications may file motions for funds for an expert
witness in the field of eyewitness identification, as such experts may be necessary to
guarantee the defendant’s fundamental right to a fair trial and to effective assistance of
Raising Issues of Race in North Carolina Criminal Cases