Abstract
One procedural safeguard that may improve the reliability of eyewitness identification is a sequential lineup. A sequential lineup (view lineup members one at a time) is thought to be superior to a simultaneous lineup (view all lineup members at the same time) because the sequential lineup appears to make it less likely that a witness will choose someone from a lineup when the police have an innocent suspect. A framework developed from Estes' (1997) perturbation model was applied to the data from Gronlund (2004). According to the proposed framework, the sequential lineup advantage results only if distinctive information is encoded and recollection is used to access that information. Implications of this framework for lineup decision processes are discussed. An understanding of the mechanisms that underlie the sequential lineup advantage can strengthen arguments involving adoption of this procedural safeguard and improve its administration. Copyright © 2004 John Wiley & Sons, Ltd.
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