Making sense of sequential lineups: An experimental and theoretical analysis of position effects

Publication date: February 2019Source: Journal of Memory and Language, Volume 104Author(s): Brent M. Wilson, Kristin Donnelly, Nicholas Christenfeld, John T. WixtedAbstractAs part of a criminal investigation, the police often administer a recognition memory task known as a photo lineup. A typical 6-person photo lineup consists of one suspect (who may or may not be guilty) and five physically similar foils (all known to be innocent). The photos can be shown simultaneously (i.e., all at once) or sequentially (i.e., one at a time). Approximately 30% of U.S. police departments have moved to using the sequential lineup procedure over the last 30 years, yet its theoretical underpinnings remain poorly understood. A simple signal detection model makes several unexpected predictions about how the...

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