Fig. 4

Receiver operating characteristic (ROC) curves comparing showups, 3-, 6-, and 12-person biased sequential lineups. The value of SSP = .75, making the innocent suspect a better match to the PERP than the fillers. a SSF = 0.0, b SSF = .3, c SSF = .6. Encoding constant 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