PSYC 3020 Lecture Notes - Lecture 4: Hallucination, Structured Interview, Dsm-5

• School: University of Guelph
• Department: Psychology
• Course: PSYC 3020
• Professor: Dan Yarmey

Document Summary

Applications of the polygraph test: police often use them to help their criminal investigations, ask victims to take one, ask suspects to take one. Included as baseline and are not scored: relevant questions, establish guilt or innocence, deal with the crime being investigated, ex. Innocent suspects = react more to comparison questions than relevant questions. Idea is that the guilty person will elicit a higher physiological response to the correct answer. Problematic because some people are falsely convicted ans some guilty people are not convicted: confessions. Problematic because confessions are often not independent from the polygraph examiner(cid:495)s decisions confessions are often elicited because the person failed the polygraph test. Jurors tended to give polygraphs more weight than it deserves. Verbal and nonverbal behaviour cues to lying: verbal characteristics: Speech fillers (cid:523) frequency of saying (cid:494)ah(cid:495) or (cid:494)umm(cid:495)(cid:524) Speech errors (word or sentence repetition, sentence change, sentence incompletion, or slips of the tongue)