Mind and behavior in legal settings covers disciplines about mental state and behavior in court and investigation. The Department of Justice lists forensic psychiatry among the forensic disciplines practiced outside forensic laboratories, beside forensic pathology, nursing, entomology and engineering. A polygraph test, popularly called a lie detector test, is a machine that measures a person's physiological responses, such as heart rate, blood pressure, respiration and skin conductivity, as they answer questions. It cannot actually test for honesty, because it relies on the operator's analysis of the responses, which can be inaccurate, so polygraph results are usually not admitted as evidence.
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Legal Information Institute, Cornell Law School: polygraph
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A polygraph test-popularly known as a lie detector test, is a machine that measures a person's physiological responses when they respond to questions.
United States Department of Justice, Office of Legal Policy: Forensic Science
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forensic pathology, forensic nursing, forensic psychiatry, forensic entomology, and forensic engineering
Forensic Psychiatry (Wikipedia)
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is a subspecialty of psychiatry related to criminology
Wikipedia: Forensic Psychology
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Forensic psychology is the application of scientific knowledge and methods (in relation to psychology) to assist in answering legal questions.
Wikipedia: Polygraph
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A polygraph, often incorrectly referred to as a lie detector, is a device that measures and records several clinical biomarkers, such as blood pressure, pulse, respiratory rate, and skin conductivity, and it is used while a person answers a series of questions to purportedly detect lies.
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