Exploring the diagnostic utility of facial composites: beliefs of guilt can bias perceived similarity between composite and suspect.

Full Abstract

Facial composite research has generally focused on the investigative utility of composites-using composites to find suspects. However, almost no work has examined the diagnostic utility of facial composites-the extent to which composites can be used as evidence against a suspect. For example, detectives and jurors may use the perceived similarity of a suspect to a composite as evidence to determine the likelihood of a suspect's guilt. However, research in social cognition and models of cognitive coherence suggest that these similarity judgments may be biased by evaluators' preexisting beliefs of guilt. Two studies examined how preexisting beliefs of guilt influence similarity ratings between a suspect and a facial composite. Study 1 (n = 93) demonstrated that mock-investigators' beliefs in a suspect's guilt inflated their subsequent similarity ratings. Study 2 (n = 49) demonstrated that mock-jurors' beliefs in a defendant's guilt predicted their similarity ratings. These findings highlight a problem of using facial composites as evidence against a suspect, and demonstrate the malleability of similarity judgments. (PsycINFO Database Record (c) 2009 APA, all rights reserved).

Author information

Author/s: Charman, Steve D (SD); Gregory, Amy Hyman (AH); Carlucci, Marianna (M);

Affiliation: Department of Psychology, Florida International University, Miami, FL 33199, USA. charmans(-atsign-)fiu.edu

Journal and publication information

Publication Type: Journal Article

Journal: Journal of experimental psychology. Applied (J Exp Psychol Appl), published in United States. (Language: eng)

Reference: 2009-Mar; vol 15 (issue 1) : pp 76-90

Dates: Created 2009/03/24; Completed 2009/05/28;

PMID: 19309218, status: MEDLINE (last retrieval date: 5/28/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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