PSYA02H3 Lecture 15: Lecture 15
52
PSYA02H3 Full Course Notes
Verified Note
52 documents
Document Summary
Measure reaction that people cannot control when they are nervous. Measure respiration rate, blood pressure, heart rate, skin resistance. Control question is used to compare emotion (level of emotion) in relevant question. Lykken identified one problem in polygraph is that innocent people are determined to be guilty as well. Polygraph is not admitted in court as evidence in canada because they are unreliable. A risk that jury may not listen to other evidence and rely solely on polygraph. Too much danger and the technology does not have a high level of accuracy. The better way is to fake emotion and contract one"s toe. Custom officers are asked to identified smuggler and non-smuggler by watching video. They fail to identify liar because they believe that liar exhibit natural cues, like looking away, touching nose, and slow in response. In fact, professional liar can master the skills without showing natural cues above.
