TY - JOUR
T1 - The comparison question polygraph test
T2 - A contrast of methods and scoring
AU - Honts, Charles R.
AU - Reavy, Racheal
N1 - Funding Information:
This material is based upon work supported in part by, the U. S. Army Research Laboratory and the U. S. Army Research Office under contract/grant number W9111NF-07-1-0670 . The authors would like to recognize the following contributors who took part in conducting this research, Mark Handler, Kimberly Turnbloom, James Pitman, Flavia Pitman, and Scott McBride. We would also like to thank Maria Hartwig for her comments on a draft of this manuscript.
Publisher Copyright:
© 2015 Elsevier Inc.
PY - 2015/5/1
Y1 - 2015/5/1
N2 - We conducted a mock crime experiment with 250 paid participants (126 females, Mdn age=30years) contrasting the validity of the probable-lie and the directed-lie variants of the comparison question test (CQT) for the detection of deception. Subjects were assigned at random to one of eight conditions in a Guilt (Guilty/Innocent)×Test Type (Probable-Lie/Directed-Lie)×Stimulation (Between Repetition Stimulation/No Stimulation) factorial design. The data were scored by an experienced polygraph examiner who was unaware of subject assignment to conditions and with a computer algorithm known as the Objective Scoring System Version 2 (OSS2). There were substantial main effects of guilt in both the OSS2 computer scores F(1, 241)=143.82, p<.001, ηp2=0.371, and in the human scoring, F(1, 242)=98.92, p<.001, ηp2=29. There were no differences between the test types in the number of spontaneous countermeasure attempts made against them. Although under the controlled conditions of an experiment the probable-lie and the directed-lie variants of the CQT produced equivocal results in terms of detection accuracy, the directed-lie variant has much to recommend it as it is inherently more standardized in its administration and construction.
AB - We conducted a mock crime experiment with 250 paid participants (126 females, Mdn age=30years) contrasting the validity of the probable-lie and the directed-lie variants of the comparison question test (CQT) for the detection of deception. Subjects were assigned at random to one of eight conditions in a Guilt (Guilty/Innocent)×Test Type (Probable-Lie/Directed-Lie)×Stimulation (Between Repetition Stimulation/No Stimulation) factorial design. The data were scored by an experienced polygraph examiner who was unaware of subject assignment to conditions and with a computer algorithm known as the Objective Scoring System Version 2 (OSS2). There were substantial main effects of guilt in both the OSS2 computer scores F(1, 241)=143.82, p<.001, ηp2=0.371, and in the human scoring, F(1, 242)=98.92, p<.001, ηp2=29. There were no differences between the test types in the number of spontaneous countermeasure attempts made against them. Although under the controlled conditions of an experiment the probable-lie and the directed-lie variants of the CQT produced equivocal results in terms of detection accuracy, the directed-lie variant has much to recommend it as it is inherently more standardized in its administration and construction.
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U2 - 10.1016/j.physbeh.2015.02.028
DO - 10.1016/j.physbeh.2015.02.028
M3 - Article
C2 - 25703188
AN - SCOPUS:84923280109
SN - 0031-9384
VL - 143
SP - 15
EP - 26
JO - Physiology and Behavior
JF - Physiology and Behavior
ER -
