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Fig. 7 | Cognitive Research: Principles and Implications

Fig. 7

From: Theoretical vs. empirical discriminability: the application of ROC methods to eyewitness identification

Fig. 7

Simulated receiver operating characteristic (ROC) data generated by a simultaneous lineup using the MAX decision rule, a sequential lineup using the “first-above-criterion” decision rule, and a showup. A showup is an old/new recognition memory task in which a single face is presented for an old/new decision. For all three procedures, d' was set to 1.4, the overall decision criterion was set to 1.7, and 100,000 simulated trials were run. The top panel shows the simulated results with criterion variability set to 0. The middle panel shows the simulated results with criterion variability set to 0.5. The bottom panel shows the simulated results with criterion variability set to 2.0 (extreme criterion variability). The confidence criteria were programmed to shift in lock step to prevent violations of monotonic order (lowest = 1 to highest = 5). The dashed line represents the line of chance performance

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