Expert Testimony: Lineup Identification
An eyewitness identifies the defendant in a show-up, line-up, photo-spread or mug-book.
We provide expert testimony on the factors that affect identification accuracy.
We testify about two general sets of factors that can increase the accuracy of eyewitness identifications, those stemming from the crime itself, and those from the way in which the investigation was carried out.
Crime Characteristics. The negative factors include:
Investigation Characteristics. The negative factors include:
US Attorney General’s Guidelines for Investigations Involving Eyewitnesses. Eyewitness Evidence: A Guide for Law Enforcement (NCJ 178240, 1999); Eyewitness Evidence: A Trainer's Manual for Law Enforcement (NCJ 188678): Police Lineups: Making Eyewitness Identification More Reliable (NCJ 219604). These guidelines incorporate most of the latest research and contain recommendations for how investigations involving eyewitnesses should be conducted. CLICK HERE here to view the 1999 US Attorney General’s Guidelines to see if the Guidelines have been properly followed in your case.
CLICK HERE to view our latest research publication on the factors that affect the accuracy of eyewitness identifications: Ralph Haber and Lyn Haber (submitted for publication) Eyewitness Accuracy when Making an Identification in a Lineup. This paper documents evidence that eyewitnesses make identification errors 50% of the time when viewing a lineup.