Abstract
AbstractWe investigated the effects of lineup size, target presence, and target sex on voice identification accuracy. In Study 1, participants identified a female target from 1‐, 6‐, or 10‐voice target present or target absent lineups. Results demonstrated increasing accuracy with smaller target absent lineups. One‐voice lineups led to higher rates of innocent suspect identifications than 10‐voice lineups. In Study 2, participants identified a male or female target from 1‐, 6‐, or 10‐voice target present or target absent lineups. Results revealed increased correct identifications in 1‐ and 6‐voice and increased innocent suspect identifications in 1‐voice lineups, compared to 10‐voice lineups. Female lineups resulted in higher accuracy in target present lineups yet increased rates of innocent suspect identifications. Our findings indicate 1‐voice lineups result in both increased accuracy and increased innocent suspect identifications, a trade‐off which may not be advisable. Future research should further explore the impact of multi‐voice lineups on accuracy.
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