PSYC 3020 Study Guide - Midterm Guide: Lie Detection, Polygraph, Stereotype Threat
4 Apr 2018
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Document Summary
Police are like a human lie dector, reading the nonverbal cues that are associated with lying. Canadian courts have expressed great confidence in jurors. Watching how people behave on the stand. Ability to tell if they are telling the truth. Dominant judicial attitude appears to be that assessing credibility is a fairly straightforward matter. 384 studies > 24 000 people rehearsal and truth/lie comparisons +/- accuracy by 2% people not much better than chance (54%), we are right about people lying half the time. Despite decades of research effort to maximize the accuracy of deception judgments, detection rates barely budge if they see someone lie and tell the truth their accuracy was a little better. Training: interrogators are trained to read verbal and nonverbal cues. Many cues (crossing legs, fidgeting, voiding eye contact) are flawed, they are not consistent of all people.
