NCJ Number
176932
Journal
Polygraph Volume: 27 Issue: 4 Dated: 1998 Pages: 271-275
Date Published
1998
Length
5 pages
Annotation
Thirty peak of tension (POT) charts of males and 30 POT charts of females taken from Maryland Institute of Criminal Justice's real case archives served as the raw data in this study to identify possible sex differences in electrodermal responding patterns in polygraph examinations.
Abstract
Two methods were used to test for differences between electrodermal responses to lies and truthfulness. The first was the mathematical ratio between the size of the electrodermal reaction to the known lie key question in the POT test and the size of the electrodermal reaction to the last known truth question (LTR-L). The second was the mathematical ratio between the size of the electrodermal reaction to the known lie key question in the POT and the size of the electrodermal reaction to the first known truth question (LTR-F). Results revealed significant differences between males and females for the LTR-L parameter. Females showed stronger contrasts in response intensities than males between deception and truthfulness. No significant differences were observed between males and females for the LTR-F parameter. An appendix contains data on the size of electrodermal responses of males and females. 6 references, 1 table, and 2 figures