Examining Lineup Identification as a Function of Foil Similarity and Lineup Procedure

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Pratt, Keltie Jean




The current study examined the effect of lineup procedure and foil similarity on identification accuracy. This study presented adults (N = 287) with either a modified lineup procedure, referred to as the elimination-plus procedure, or the simultaneous procedure. The level of similarity between the foil photographs and the target photo was manipulated (i.e., high similarity or low similarity) in addition to whether the target was present or absent in the lineup. Results from the current study indicate higher rates of correct identification for the simultaneous rather than the elimination-plus procedure and comparable rates of correct rejection across the two lineups. Additionally, similar to previous research, identification accuracy was highest in low similarity conditions compared to high similarity conditions. No interactions were found. The elimination-plus procedure is beneficial as it provides an additional confidence rating, taken after judgment 1. Implications of these findings and suggestions for future research are discussed.  


Psychology - Experimental




Carleton University

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