An Assessment of the Backster "Either-Or" Rule in Polygraph Scoring.

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    • Subject Terms:
      UNITED States
    • Abstract:
      The article presents an analysis of the Backster "Either-Or" Rule (EOR) in polygraph scoring by applying either the Backster scoring system or the U.S. federal scoring system on 100 Backster field cases. The conclusion was that there was no material difference between the two scoring systems in so far as decision correctness, errors and indeterminations are concerned, though both fared better than the Backster method without EOR. The inferences and restrictions of the findings are also discussed.