PSYC 331 Chapter Notes - Chapter 4: Polygraph, Malingering, Structured Interview
Document Summary
The assumption that the act of lying generates physiological arousal that is detectable. Baseline question (factual ,easily established if the person is lying or not), Control question there are questions that might prompt someone to want to lie, Cqt has 3 types of questions: baseline, control and relevant. These are deigned to put the defendant on the defensive. Guilty subjects = less arousal on the control than relevant questions because the relevant > threat. Innocent subjects should have more arousal in control than relevant questions. When relevant (stronger) > control, negative score given. / when control > relevant, positive score given. 0 = no difference, 1 = noticeable difference, 2 = strong difference ,3= dramatic difference. Total test score: -6 or lower = deceptive; +6 or higher = truthful ; -6 to +6 = inconclusive. There aren"t standardized rules; it is subjective and most assigned scores are 0 to 1.
