The effect of facial composite construction on eyewitness identification accuracy in an ecologically valid paradigm.

Previous research has produced equivocal results with regard to whether facial composite creation affects subsequent eyewitness identification accuracy, but the most widely publicized view is that creating a composite impairs the ability to later recognize the perpetrator from a line-up. In our first experiment, we examined this effect using several ecologically valid elements including a live staged crime, trained police officers, and a long delay between construction and identification, albeit with only a short delay between crime and composite construction. Composite construction did not significantly affect line-up identification accuracy. Experiment 2 replicated this result using a laboratory-based design and sequential line-up task, eliminating the possibly confounding effect of differential levels of motivation and relative judgments. Taken together, the experiments suggest composite creation may not negatively impact subsequent line-up accuracy, regardless of whether an ecologically valid method or more standard laboratory testing was used.