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ERIC Number: EJ833225
Record Type: Journal
Publication Date: 2009-Mar
Pages: 13
Abstractor: As Provided
ISSN: ISSN-1076-898X
Lineup Administrator Influences on Eyewitness Identification Decisions
Clark, Steven E.; Marshall, Tanya E.; Rosenthal, Robert
Journal of Experimental Psychology: Applied, v15 n1 p63-75 Mar 2009
The present research examines how a lineup administrator may influence eyewitness identification decisions through different forms of influence, after providing the witness with standard, unbiased instructions. Participant-witnesses viewed a staged crime and were later shown a target-present or target-absent lineup. The lineup administrators either remained silent while the witness examined the lineup, made ostensibly cautionary statements to the witness, or prompted the witness to identify the person in the lineup who seemed most similar to the perpetrator. These two forms of influence, denoted as subtle-influence and similarity-influence conditions, led to different patterns of identification results. Results for the similarity-influence condition were generally consistent with criterion shift and relative judgment models of eyewitness decision making. Results for the subtle-influence condition, however, cannot be explained by alterations in the decision rule. A weighted matching model is outlined to explain results from the subtle-influence condition. Witnesses seemed generally unaware of the attempts by the lineup administrator to influence their decision, although some noted it, and the probative value of suspect identifications was lower for those who did note it. Implications for theory and policy are discussed. (Contains 6 tables, 2 figures, and 6 footnotes.)
American Psychological Association. Journals Department, 750 First Street NE, Washington, DC 20002-4242. Tel: 800-374-2721; Tel: 202-336-5510; Fax: 202-336-5502; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A