The Court of Appeals, in affirming Keith Johnson’s convictions for armed robbery, aggravated battery, and aggravated assault, upheld the trial court’s grant of the State’s motion in limine regarding expert testimony Johnson proffered on the issue of the reliability of eyewitness identification.
Johnson v. State,
[t]he determination of a witness’ credibility, including the accuracy of eyewitness identification, is within the exclusive province of the jury. [Cit.] The memory of a witness may not be disparaged by another witness in order to impeach that testimony; it must be done by cross-examination. [Cits.]
We granted the writ of certiorari to consider whether an accused’s rights require that trial courts retain the discretion to admit proffered expert testimony regarding the reliability of eyewitness identifications and whether the Court of Appeals erred in affirming the trial court’s decision to exclude Johnson’s proffer of expert testimony regarding the reliability of eyewitness identifications as a matter of law. We hereby reaffirm our recent holding in
Johnson v. State,
*255
1. In
Jones v. State,
In our subsequent holding in
Norris,
supra,
Johnson urges this Court to join the “modern trend” in this area of the law, arguing we should adopt the position taken in
United States v. Downing,
753 F2d 1224 (3d Cir. 1985) and
People v. McDonald,
Although expert testimony on the reliability of eyewitness identification is excluded as a matter of law in every Federal court in Georgia,
United States v. Smith,
supra,
2. We turn now to the facts adduced in Johnson’s case to determine whether the trial court abused its discretion by excluding the testimony of Johnson’s expert, Dr. Steven Cole. 4 The crime occurred at an ATM of a bank inside a suburban shopping center. The victim was a 62-year-old white woman who was attacked from behind by a *258 black male who cut her throat, knocked her to the ground, stabbed her repeatedly and then fled. The attack took approximately one minute and was recorded, at two-second intervals, by a bank video camera. Still photos made from the videotape were introduced into evidence. The victim testified that she spoke to her attacker and remembered his responses to her words. The victim was shown several photo line-ups within a month of the crime and declined to identify any of the displayed individuals as her attacker. Johnson’s photo was not among those shown the victim. Five months after the crime, the victim viewed another photo line-up and selected Johnson’s photo. She identified Johnson at trial as the man who attacked her.
The State did not rely exclusively on the victim’s testimony or the ATM photos. The State also adduced testimony by Brenda Gilpatrick, a white businesswoman, who stated that on the night of the crimes in issue, she had driven to the shopping center to have dinner with a friend in a restaurant at the end nearest to the ATM where the victim was attacked. Ms. Gilpatrick, who had received security training and taught security issues during her 22-year employment in the shopping center industry, noticed a young black man standing on the sidewalk in the area where she intended to walk. The man was fidgeting and looking so intently in her direction that she turned around to see what was interesting the man and realized he was watching the bank area behind her. The man’s behavior was so suspicious that Ms. Gilpatrick decided not to exit her car and instead waited, observing him. The witness stated that it was night and raining at the time, but that the man stood directly under a security light and there was also recessed lighting; the witness described the lighting as “very, very good for a shopping center.” When the man realized that Ms. Gilpatrick was watching him, he “kind of jumped” behind some bushes. At that time, others left the restaurant and Ms. Gilpatrick was able to safely enter and join her dining companion. She immediately raised the matter with her companion; they looked outside, but the man had left.
The following day, after realizing that the attack she heard about on the news had occurred at the ATM near the restaurant, Ms. Gilpatrick contacted the police. She viewed the ATM photos of the attacker and told the police she was confident it was the same person she had seen the previous evening. She then provided police with a detailed description of the man she had observed, including details about his eyebrows and the manner in which his right ear stuck out and his left ear looked pinned back in a “curled effect.” That same day Ms. Gilpatrick spent two hours working with a police artist to create a composite picture of the man she had observed, describing the picture as a “nine” in comparison to the man she remembered. Ms. Gilpatrick was also shown several photo line-ups within a month *259 of the crime and did not find the man she had seen in the line-ups, though she used one photo to describe in detail why that individual was not the correct one by pointing out to the detective the differences in nose thickness, eyebrows, hairline and other features. Five months later Ms. Gilpatrick was shown the photo line-up containing Johnson’s photo. 5 The detective who handled the matter testified that he had not finished sitting down after handing Ms. Gilpatrick the line-up before she had selected Johnson’s photo. Ms. Gilpatrick identified Johnson at trial as the man she saw in the shopping center.
In addition to the eyewitness’ identification, the State introduced evidence of a similar transaction, in which a 60-year-old white man was robbed at gunpoint at an ATM located in a shopping center. Although the victim of this crime was not able to identify his attacker, the victim was a weapons hobbyist who recognized the type of weapon carried by the attacker (a “West German import R. G. Ten, twenty-two caliber”) and the victim was able to get the license plate of the car in which the attacker left. Police discovered that the car had been purchased for Johnson by his uncle and located the car, with Johnson behind the wheel and an R. G. .22 caliber handgun on the floorboard, shortly after the crime.
In his statement to police, Johnson stated that he was a crack cocaine addict and “that he had basically no memory or recollection of the months of December and thereafter because of his addiction.” Relatives of the mother of Johnson’s child testified that at least part of the evening in issue he was at a birthday party for the child’s great grandmother, though testimony by the child’s grandfather cast doubt on whether that party occurred in 1993, at the time of the crimes when the child was barely a month old, or the next year, when the child was a one-year-old.
We have set forth the above evidence in considerable detail in order to discuss why the exclusion of the proffered testimony by Johnson’s expert was not an abuse of discretion in this case. The transcript reveals that Johnson’s expert, Dr. Cole, testified generally about what science has revealed regarding the manner in which images are processed and retained by the brain and discussed several particulars affecting an individual’s ability to identify another, including matters well within the knowledge of an average jury such as the nature of lighting and weather conditions existing at the time the person is viewed, the influence other sources such as photos could have on identification, and the effect the passing of time has on a witness’ accuracy. Dr. Cole also discussed factors less likely to be fully *260 understood by jurors, such as the detrimental effect acute stress can have on identification; difficulties in cross-racial identifications; the likelihood that a victim will focus on an attacker’s weapon rather than the attacker’s face; and studies indicating that a greater level of confidence a witness has in his identification does not always mean a greater accuracy in identification.
When this expertise is applied to the facts adduced by the State, particularly the testimony of Brenda Gilpatrick, it is apparent that no abuse of the trial court’s discretion occurred in the exclusion of Dr. Cole’s testimony. Ms. Gilpatrick was not under acute stress and was not faced with a deadly weapon at the time she viewed Johnson. As to cross-racial misidentification, the transcript is clear that Ms. Gilpatrick did not identify Johnson based on generalized racial characteristics but on individual details such as the thickness of his eyebrows and neck, the location of his hairline, and the shape of his ears. As to the certainty of Ms. Gilpatrick’s identification, the trial court admitted into evidence the composite drawing created less than 24 hours after Ms. Gilpatrick viewed Johnson in the shopping center; the trial court thus knew the jury would be able to compare the composite to Johnson’s appearance at trial as well as to photos of Johnson admitted into evidence which depicted his appearance around the time of the crimes. Furthermore, at the time the trial court excluded the proffered testimony of Dr. Cole, the court had heard the testimony by the victim and Ms. Gilpatrick, the extensive cross-examination of both eyewitnesses by defense counsel, 6 and the State’s similar transaction evidence.
We find that while the testimony of Dr. Cole might have been helpful to some degree, under the circumstances in this case there was no clear abuse of discretion in the trial court’s refusal to admit Dr. Cole’s testimony. Accordingly, because the grant of the State’s *261 motion in limine regarding expert testimony on the reliability of eyewitness identification did not constitute error, we affirm the judgment of the Court of Appeals.
Judgment affirmed.
Notes
An expert’s proposed testimony should be “sufficiently tied to the facts of the case that it will aid the jury in resolving a factual dispute,” Downing, supra, 753 F2d at 1242 (IV) (D), and proffered testimony which'addresses solely generalized concepts in this area of psychology may properly be rejected. Id. Further, expert testimony may be excluded when it would *256 confuse or mislead the jury, id. at 1239 (IV) (B), or when the trial court, in its discretion, concludes that the testimony would be a waste of time. Id. at 1242 (V).
This particularly applies where the expert testimony involves issues which are “counterintuitive” or “contrary to common wisdom” regarding eyewitness identification, such as the absence of an expected correlation between the witness’ expression of confidence in the identification and actual accuracy, or the impairment effect acute stress or the presence of a weapon may have on accuracy. See United States v. Moore, 786 F2d 1308, 1312 (5th Cir. 1986).
While an expert may offer an opinion, based on the facts surrounding an individual eyewitness’ identification when posited in the form of a hypothetical question, as to whether scientific research has established a likelihood of unreliability for identifications derived from comparable facts, an expert is not authorized to express his or her opinion regarding the credibility or trustworthiness of any individual eyewitness. An eyewitness’ personal ability to identify another person is a matter to be explored exclusively on direct and cross-examination of that witness. We thus overrule the language in
Jones v. State,
supra,
A review of the transcript in this case fails to reflect language in the trial court’s ruling comparable to the clear language used by the trial judge in
Johnson,
supra,
The detective who showed the photo line-ups containing Johnson’s photo to the victim and Ms. Gilpatrick testified that he used two separate line-ups to avoid any possible collusion between the two eyewitnesses.
Some foreign courts have taken the position that expert testimony on eyewitness'identification is not needed because the jury can be made aware of the problems with such identification through intensive cross-examination, argument of counsel and the giving of detailed jury instructions addressing factors the jury should consider in evaluating such identification. See, e.g.,
State v. McClendon,
