PSY328H1 Lecture : Chapter 4
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Principle: deception is associated with physiological change. Types of polygraph tests: the comparison question test. most commonly used test to investigate criminal acts. Includes irrelevant questions that are unrelated to the crime, relevant questions concerning the crime being investigated, and comparison questions concerning the person s honesty and past history prior to the event being investigated. Includes a pretest interview y polygraph examiner develops the control questions, learns about the background of the suspect, and attempts to convince the suspect of the accuracy of the polygraph test. examiner asks ten questions to be answered with a yes or. No three types of questions asked: y. polygraph examiners assume they can detect deception by comparing reactions to the relevant and comparison questions. guilty suspects are assumed to react more to relevant questions than comparison questions. three possible outcomes of a polygraph test: truthful, deceptive, and inconclusive: the concealed information test (cit)