Fig. 3

Receiver operating characteristic (ROC) curves comparing showups, 3-, 6-, and 12-person fair sequential lineups. a SSP = SSF = .3, b SSP = SSF = .6, c SSP = SSF = .75. Encoding fixed at a = .3, and cseq = csu = .09. The solid diagonal line indicates chance performance. SSP Similarity of the innocent Suspect to the PERP, SSF Similarity of the Suspect to the Fillers, PERP perpetrator