Task: Wrong Candidate Generation
Input (English): Id. The district court excluded this portion of the expert’s testimony. Id. at 1397. Relying on Downing, the Third Circuit reversed. Id. at 1401. We agree that expert testimony on eyewitness identification may properly be admitted under Daubert in certain circumstances, but Stevens simply does not persuade us that the district court abused its discretion in the instant case. We note that here there were five eyewitness identifica tions, not one. Likewise, as counsel for the government pointed out at argument, there was also testimony that Mr. Smith changed his alibi. In this admittedly close case, we hold only that the district court did not abuse its discretion in excluding the testimony under the circumstances. See United States v. Blade, 811 F.2d 461, 465 (8th Cir.1987) (<HOLDING>); United States v. Smith, 736 F.2d 1103, 
 Holding statements: (A) holding admissible expert testimony concerning factors that may impair eyewitness identification and rejecting that concerning a particular eyewitness credibility and the statistical probability of eyewitness misidentification (B) holding no abuse of discretion to exclude expert eyewitness identification testimony where governments case relied on more than eyewitness identification (C) holding that the trial court did not err by failing to instruct the jury to consider certain additional factors in evaluating the validity of eyewitness identification testimony (D) holding that a specific instruction was unnecessary because eyewitness was crossexamined and the eyewitness testimony was discussed in defense counsels opening statement (E) holding exclusion of expert eyewitness identification testimony harmless error where governments case included three separate eyewitnesses and a palm print that discredited the defendants alibi
Output (English): holding admissible expert testimony concerning factors that may impair eyewitness identification and rejecting that concerning a particular eyewitness credibility and the statistical probability of eyewitness misidentification