People v. LeGrand, 8 N.Y.3d 449 (2007)
Where a case hinges on the accuracy of eyewitness identifications with little corroborating evidence, excluding expert testimony on eyewitness reliability, if relevant, generally accepted, and beyond the ken of the average juror, is an abuse of discretion.
Summary
Joaquin Liriano was murdered in 1991. The case stalled until 1998 when the defendant, LeGrand, was identified as a suspect based on a composite sketch made shortly after the crime. The People’s case rested solely on eyewitness identifications made nearly seven years after the crime. LeGrand sought to introduce expert testimony regarding factors affecting eyewitness reliability, which the trial court precluded after a Frye hearing. The Court of Appeals reversed, holding that the exclusion of the expert testimony was an abuse of discretion given the lack of corroborating evidence and the centrality of eyewitness identification.
Facts
Joaquin Liriano was stabbed to death in Manhattan in June 1991, and his assailant fled. Four people witnessed the attack and created a composite sketch. Two years later, LeGrand was identified as a possible suspect because he resembled the sketch. The case remained dormant until 1998, when LeGrand was arrested for burglary. The authorities then located the witnesses; one identified LeGrand as the killer, two tentatively identified him, and two could not identify him. There was no forensic or physical evidence connecting LeGrand to the stabbing.
Procedural History
LeGrand was charged with second-degree murder in 1999. His first trial in 2001 ended in a mistrial. Prior to his second trial, LeGrand moved to introduce expert testimony on eyewitness identification. The trial court conducted a Frye hearing and precluded the testimony. The jury found LeGrand guilty. The Appellate Division affirmed. The Court of Appeals reversed and ordered a new trial.
Issue(s)
Whether the trial court erred in precluding expert testimony on the reliability of eyewitness identifications after determining that the proposed testimony was based on novel scientific principles not generally accepted by the relevant scientific community, where the case turned on the accuracy of eyewitness identifications and there was little or no corroborating evidence.
Holding
Yes, because where the case turns on the accuracy of eyewitness identifications and there is little or no corroborating evidence connecting the defendant to the crime, it is an abuse of discretion for a trial court to exclude expert testimony on the reliability of eyewitness identifications if that testimony is (1) relevant to the witness’s identification of defendant, (2) based on principles that are generally accepted within the relevant scientific community, (3) proffered by a qualified expert and (4) on a topic beyond the ken of the average juror.
Court’s Reasoning
The Court of Appeals recognized an emerging trend of admitting expert psychological testimony on eyewitness identification, noting that such testimony can provide much-needed guidance to juries. The Court emphasized the trial court’s discretion in determining whether jurors would benefit from the specialized knowledge of an expert witness, considering the centrality of the identification issue and the existence of corroborating evidence.
The Court referenced Frye v. United States, emphasizing that the thing from which a deduction is made must be sufficiently established to have gained general acceptance in the particular field in which it belongs. The Court distinguished its prior holdings in People v. Lee and People v. Young, emphasizing that, unlike those cases, there was no corroborating evidence connecting LeGrand to the crime. The Court found that the expert’s testimony regarding the correlation between confidence and accuracy, the effect of post-event information, and confidence malleability met the Frye standard, while the effect of weapon focus did not. The Court emphasized, “Once a scientific procedure has been proved reliable, a Frye inquiry need not be conducted each time such evidence is offered [and courts] may take judicial notice of reliability of the general procedure.”
Ultimately, the Court concluded that the exclusion of the expert testimony was an abuse of discretion, warranting a new trial. However, it reiterated that the admissibility of such evidence also depends upon the existence of sufficient corroborating evidence to link the defendant to the crime. In the event sufficient corroborating evidence is found to exist, an exercise of discretion excluding eyewitness expert testimony would not be fatal to a jury verdict convicting defendant.