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NCJRS Abstract

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NCJ Number: 113599 Add to Shopping cart Find in a Library
Title: Study of the Validity of Polygraph Examinations in Criminal Investigation
Author(s): D C Raskin; J C Kircher; C R Honts; S W Horowitz
Date Published: 1988
Page Count: 65
Sponsoring Agency: National Institute of Justice (NIJ)
Washington, DC 20531
National Institute of Justice/
Rockville, MD 20849
NCJRS Photocopy Services
Rockville, MD 20849-6000
US Dept of Justice NIJ Pub
Washington, DC 20531
Grant Number: 85-IJ-CX-0040
Sale Source: National Institute of Justice/
NCJRS paper reproduction
Box 6000, Dept F
Rockville, MD 20849
United States of America

NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America
Document: PDF
Type: Report (Study/Research)
Language: English
Country: United States of America
Annotation: This project used 241 confirmed and unconfirmed polygraph charts from examinations conducted by the U.S. Secret Service during FY 1983 and FY 1984 to determine the validity of the control question technique for assessing truth and deception in criminal investigations.
Abstract: The study also assessed: (1) the performance of polygraph examiners with different educational backgrounds and experience with polygraph techniques; (2) the efficacy of a computer method for interpreting the outcomes of polygraph examinations; and (3) the extent to which laboratory mock-crime experiments provide information and results that have implications for field applications. The project used 6 polygraph examiners and a psychophysiologist at the University of Utah to 'blindly' interpret the 241 cases selected by computer program from 1,757 polygraph examinations conducted by the U.S. Secret Service at its Washington, D.C., headquarters. The sample also was subjected to computer interpretation using algorithms. Results indicate that the accuracy of human and computer interpretations was very high, ranging from 91 percent to 96 percent correct on confirmed truthful answers, and 85 percent to 95 percent correct on confirmed deceptive answers. Blind interpretation produced somewhat lower accuracies, ranging from 63 percent to 85 percent on truthful answers, and 84 percent to 95 percent correct on deceptive answers. Accuracy of the computer interpretation ranged from 95 percent to 96 percent on confirmed truthful suspects, and 83 percent to 96 percent on confirmed deceptive subjects. 38 references.
Main Term(s): Polygraph techniques
Index Term(s): Polygraph reliability
Note: Final Report to the National Institute of Justice
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