期刊
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
卷 60, 期 1, 页码 76-87出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijpsycho.2005.05.006
关键词
Guilty Knowledge Test; Guilty Actions Test; polygraph; psychophysiological detection; TrusterPro; vocal measures; voice stress
The Guilty Knowledge Test (GKT) and its variant, the Guilty Actions Test (GAT), are both psychophysiological questioning techniques aiming to detect guilty knowledge of suspects or witnesses in criminal and forensic cases. Using a GAT, this Study examined the validity of various physiological and vocal measures for the identification of guilty and innocent participants in a mock crime paradigm. Electrodermal, respiratory, and cardiovascular measures successfully differentiated between the two groups. A logistic regression model based on these variables achieved hit rates of above 90%. In contrast to these results, the vocal measures provided by the computerized voice stress analysis system TrusterPro were shown to be invalid for the detection of guilty knowledge. (c) 2005 Elsevier B.V. All rights reserved.
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