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Accession Number:
ADA379990
Title:
A Comparison of Computer Programs Designed to Evaluate Psychophysiological Detection of Deception Examination: Bakeoff 1
Descriptive Note:
Final rept. May 1996-Nov 1999
Corporate Author:
DEPARTMENT OF DEFENSE POLYGRAPH INST FORT JACKSON SC
Report Date:
1999-10-01
Pagination or Media Count:
19.0
Abstract:
This preliminary study was completed to determine if accuracy differences exist among computer programs designed to render decisions using data collected during psychophysiological detection of deception PDD examinations. The vendors of AXCON version 1.2, Chart Analysis version 5.1-090-17-097, Computerized Polygraph System version 2.2, Identified version 1.43, and PolyScore version 4.0 participated in the project. The data from 97 PDD examinations 56 deceptive and 41 nondeceptive, for which examinee veracity was known only to the investigators, were sent to software vendors with the request that a decision of deception indicated, no deception indicated, or no opinion e.g., inconclusive be returned for each examination-using the vendors software. The proportion of correct, erroneous, and no opinion decisions rendered by the five evaluated computer program ranged from .71 to .77, .07 to .10, and .13 to .21, respectively. When no opinion decisions were excluded, the proportion of correct decisions ranged from .88 to .91. There were no statistically significant differences among the frequency of correct decisions, erroneous decisions, and no opinion decisions rendered by the five computer programs. There was no single examination in the data set that all of the computer programs classified as no opinion. Finally, all of the computer programs, except the Computerized Polygraph System, erroneously classified more nondeceptive examinees as deceptive i.e., false positive than deceptive examinees as nondeceptive i.e., false negative.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
