PSYC 3310 Lecture Notes - Ground Truth, Heart Rate, Central Intelligence Agency
5 Feb 2014
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Document Summary
Based on the belief that deception is related to physiological change. Helps in criminal investigations (suspect is asked to take a polygraph test) Verify a crime has occurred (victim is asked to take a polygraph test) Monitoring sexual offenders on probation (united states) Pre-employment screening for security agencies and police. Deception is assessed by comparing physiological responses between relevant and comparison questions. Deal with prior antisocial behaviour before age 25, did. People getting interviewed have to believe that the test works. Pre-test interview: interview with suspect to develop the comparison question. Polygraph exam: question are asked while suspect"s physiological responses are measured. Scoring: polygraph examiner scores the physiological responses to determine if the suspect is truthful, deceptive, or inconclusive. Post-test interview: if a suspect is judged deceptive they are pressured to confess. Assumes guilty people react more to relevant questions and innocent people react more to comparison questions.
