Eyewitness research has identified sequential lineup testing as a way of reducing false lineup choices while maintaining accurate identifications. The authors examined the usefulness of this procedure for reducing false choices in older adults. Young and senior witnesses viewed a crime video and were later presented with target present or absent lineups in a simultaneous or sequential format. In addition, some participants received prelineup questions about their memory for a perpetrator's face and about their confidence in their ability to identify the culprit or to correctly reject the lineup. The sequential lineup reduced false choosing rates among young and older adults in target-absent conditions. In target-present conditions, sequential testing significantly reduced the correct identification rate in both age groups.
Memon, A., & Gabbert, F. (2003). Improving the identification accuracy of senior witnesses: do prelineup questions and sequential testing help? Journal of Applied Psychology, 88(2), 341-347. https://doi.org/10.1037/0021-9010.88.2.341