Effects of a mental countermeasure on the Guilty Knowledge Test by P3

DOI 2 Citations
  • SASAKI Minori
    Department of Psychology, Faculty of Humanities and Sciences, Graduate Division, Hiroshima Shudo University

Bibliographic Information

Other Title
  • 心理的カウンタメジャーがP3を指標に用いたGKTに及ぼす効果

Description

This study examined the effects of a mental countermeasure on the Guilty Knowledge Test (GKT) by P3. Twenty-eight subjects enacted a mock crime in which they stole one of five jewels in the pouch. The subjects were randomly divided into two groups : a countermeasure (CM) group and a non-countermeasure (NCM) group. In the GKT, each picture of five jewels was presented on a CRT display and the subjects were required to press a button as soon as they recognized the stimulus. In addition, only the CM group was instructed to count backwards in si-lent by sevens from 200 during the experiment. The results showed that P3 amplitudes to the relevant stimuli from Cz and Pz were smaller in the CM group than in the NCM group, although P3 amplitudes to the relevant stimuli were consistently larger than to the irrelevant stimuli. The correct detection rate was 50% in the CM and 79% in the NCM group. These findings indicate that GKT by P3 is immune from the effects of the countermeasure.

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Details 詳細情報について

  • CRID
    1390282680434830592
  • NII Article ID
    130004698494
  • DOI
    10.5674/jjppp1983.20.39
  • ISSN
    02892405
    http://id.crossref.org/issn/02892405
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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