Sequential lineup presentation: Patterns and policy


Correspondence should be addressed to Professor Rod Lindsay, Department of Psychology, Queen's University, Kingston, Ontario, K7L 3N6, Canada (e-mail:


Sequential lineups were offered as an alternative to the traditional simultaneous lineup. Sequential lineups reduce incorrect lineup selections; however, the accompanying loss of correct identifications has resulted in controversy regarding adoption of the technique. We discuss the procedure and research relevant to (1) the pattern of results found using sequential versus simultaneous lineups; (2) reasons (theory) for differences in witness responses; (3) two methodological issues; and (4) implications for policy decisions regarding the adoption of sequential lineups.