PSYCH 3CC3 Lecture Notes - Lecture 3: Paul Ekman, Lie Detection, Microexpression
25 May 2019
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Document Summary
When we"re lying, there are brief micro-expressions that reveal an individual"s real intent. P"s correctly or incorrectly report positive feelings while watching pleasurable or gruesom. Truth judged by: secret service, fbi, judges, police, psychiatrists, university students, and. Videos previously found to contain nonverbal cues to lying: masking smiles and higher pit. Judges asked to rate both general lie-detection ability and their performance in the task. Only u. s. secret service agents judge better than chance (50%), and than all other groups. Accuracy uncorrelated with ratings of general ability or task performance (except for dece. Several earlier studies found no evidence that "experts" are better at lie detection t. Forensic relevance unclear: most forensic lies not about currently felt emotion. P"s make true or false statements about their opinions on videotape. U. s. law enforcement officials and psychologists judge honesty while viewing videotapes. Overall accuracy ranges from 51% (mixed law enforcement officers) to 73% (federal offic.
