A polygraph examination of a suspected murderer included an assessment of his reaction to a detailed description of the victim's clothing and death wounds-details that would be known only to a person at the scene of the crime. The investigators were using the

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The description of the victim's clothing and death wounds is part of the guilty knowledge test, which is designed to determine if the suspect has knowledge that only the perpetrator of the crime would possess. The catharsis hypothesis suggests that expressing emotions will lead to reduced anger or aggression, the facial feedback effect pertains to the influence of facial expressions on emotional experiences, and the adaptation-level phenomenon refers to the tendency to adapt to a certain condition or level of stimulation over time. None of these concepts are related to the polygraph examination and guilty knowledge test.

A Polygraph Examination of a Suspected Murderer Included an Assessment