Effect of the Location of the Numbers Test on Examiner Decision Rates in Criminal Psychophysiological Detection of Deception Tests.
Final rept. Jul 90-Dec 95,
DEPARTMENT OF DEFENSE POLYGRAPH INST FORT MCCLELLAN AL
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The U.S. Army Criminal Investigation Command USACIDC conducted 251 psychophysiological detection of deception PDD examinations on suspects of criminal offenses in which a numbers stim test was conducted between the first and second tests of the main test, as is their standard procedure. Another 231 examination were conducted in which the numbers test was conducted prior to the first test of the main test series. Study results suggest the location of the numbers test had no effect on the inconclusive rate or the number of deception indicated DI and no deception indicated NDI decisions.
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