A comparison of methods for the analysis of event‐related potentials in deception detection

Abstract

We previously reported that a Bayesian-based event-related potential memory assessment procedure (Allen, Iacono, & Danielson, 1992, Psychophysiology, 29, 504-522) was highly accurate at identifying previously learned material, regardless of an individual's motivational incentive to conceal information. When a bootstrapping procedure (Farwell & Donchin, 1991, Psychophysiology, 28, 531-547) is applied to these same data, greater motivational incentives appear to increase the accuracy of the procedure. Receiver operating characteristic (ROC) curves were used to examine these two procedures and a new procedure. ROC curves indicated that all three methods produce extremely high rates of classification accuracy and that the sensitivity of the bootstrapping procedure to motivational incentive is due to the particular cut points selected. One or the other method may be preferred depending upon incentive to deceive, the cost of incorrect decisions, and the availability of extra psychophysiological data.

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