NDLI: Assigned Versus Random, Countermeasure-Like Responses in the P300 Based Complex Trial Protocol for Detection of Deception: Task Demand Effects

Content Provider	Springer Nature Link
Author	Meixner, John B. Haynes, Alexander Wigrad, Michael R. Brown, Jordan Peter Rosenfeld, J.
Copyright Year	2009
Abstract	We recently introduced an accurate and countermeasure resistant P300-based deception detection test called the complex trial protocol (Rosenfeld et al. in Psychophysiology 45(6):906–919, 2008). When subjects use countermeasures to all irrelevant items in the test, the probe P300 is increased rather than reduced (as it was in previous P300-based deception protocols), allowing detection of countermeasure users. The current experiment examines the role of task demand on the complex trial protocol by forcing the subject to make countermeasure-like response to stimuli. Subjects made either a simple random button response to both probe and irrelevant stimuli (experiment 1) or a more complex, assigned, button response to probe and irrelevant stimuli (experiment 2). We found that an increase in task demand reduced the effectiveness of the test. Using random responses we found a simple guilty hit rate of 11/12 with no false positives, but only a 4/11 hit rate for countermeasure-users. Using assigned responses we found a simple guilty hit rate of 8/15 with no false positives, and a 7/16 hit rate for countermeasure-users. We herein suggest that the high level of task demand associated with these countermeasure-like responses causes reduced hit rates.
Starting Page	209
Ending Page	220
Page Count	12
File Format	PDF
ISSN	10900586
Journal	Applied Psychophysiology and Biofeedback
Volume Number	34
Issue Number	3
e-ISSN	15733270
Language	English
Publisher	Springer US
Publisher Date	2009-06-20
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Task demand effects ERP P300 Deception detection CIT GKT Psychotherapy and Counseling Public Health/Gesundheitswesen Health Psychology Psychology
Content Type	Text
Resource Type	Article
Subject	Neuropsychology and Physiological Psychology Applied Psychology

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