1. A method for determining whether a subject responds deceptively comprising a) presenting the subject with a test series of stimuli; b) presenting the subject with a control series of stimuli; c) monitoring the subject's electrophysiological activity, behavioral activity, or both, associated with the subject's response to the test series and control series of stimuli; d) comparing the subject's electrophysiological activity, behavioral activity, or both, obtained from the responses to the test series and control series of stimuli; wherein a difference in the activity between the test and control stimuli indicates that the subject is responding deceptively.