A polygraph, often called a “lie detector,” is a machine that measures human responses to questions. Using of monitors attached to a person, it measures heart rate, perspiration, and nervous system arousal to gain a generally reliable estimate of whether or not the subject of the polygraph is being truthful. It’s commonly believed that when someone lies, changes occur such as increased heart rate.
Cite this article
mohammad looti (2025). Polygraph. PSYCHOLOGICAL SCALES. Retrieved from https://scales.arabpsychology.com/trm/polygraph/
mohammad looti. "Polygraph." PSYCHOLOGICAL SCALES, 5 Oct. 2025, https://scales.arabpsychology.com/trm/polygraph/.
mohammad looti. "Polygraph." PSYCHOLOGICAL SCALES, 2025. https://scales.arabpsychology.com/trm/polygraph/.
mohammad looti (2025) 'Polygraph', PSYCHOLOGICAL SCALES. Available at: https://scales.arabpsychology.com/trm/polygraph/.
[1] mohammad looti, "Polygraph," PSYCHOLOGICAL SCALES, vol. X, no. Y, ص Z-Z, October, 2025.
mohammad looti. Polygraph. PSYCHOLOGICAL SCALES. 2025;vol(issue):pages.