PSYCH 3CC3 Lecture Notes - Lecture 10: Lie Detection, Sampling Bias, Meta-Analysis
Literature indicates that we actually spend a lot of time lying: some studies show 10 lies per day average. General indications of how good we are at detecting deception from visual indications. Ekman: world"s leading expert on the facial expression of emotion, inspiration behind tv series lie to me". Had people watch 1 of 2 films: nature series good-feeling film (generate positive emotions) or, gruesome film (generate negative emotions) Whether p"s were telling the truth judged by secret service, fbi, judges, police, psychiatrists, university students and adults taking one-day course on how to detect deception: each groups shown same videos. Videos previously found to contain nonverbal cues to lying: ekman chose clips that show nonverbal lying cues: masking smiles and higher pitch voice, etc. (biased sample of videos being seen?) Judges asked to rate both general lie-detection ability, and rate their performance in the task.