감성과학 (Science of Emotion and Sensibility)
- 제12권4호
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- Pages.557-564
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- 2009
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- 1226-8593(pISSN)
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- 2383-613X(eISSN)
범죄 용의자의 거짓말탐지검사의 신뢰도와 타당도에 대한 일관성 채점기준의 효과
Effects of Consistency Criterion for Scoring on the Reliability and the Validity of Polygraph Test for Crime Suspects
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Han, Yu-Hwa
(Department of Psychology, Chungbuk National University) ;
- Jeong, Je-Young (Prosecutors' Office of the Republic of Korea) ;
- Park, Kwang-Bai (Department of Psychology, Chungbuk National University)
- 발행 : 2009.12.31
초록
현재 한국에서는 거짓말탐지검사의 채점과정에서 '일관성' 기준을 사용하고 있다. 본 연구에서는 현재 한국에서 사용하고 있는 거짓말탐지검사 기법의 채점 기준 중 '일관성' 기준의 실증적 타당성을 검증하고자 하였다. 구체적으로는 한국에서 이루어지고 있는 거짓말탐지검사의 채점과정에서 '일관성'을 실제로 고려하고 있는지의 여부를 검증한 후 '일관성'을 고려하여 채점하는 경우와 그렇지 않은 경우에서 거짓말탐지검사 결과의신뢰도(Cronbach'
For scoring polygraph charts, the Prosecutors' Office of the Republic of Korea uses a consistency criterion in which an elevated signal on one physiological channel is scored as a deceptive response only if the signal is also elevated on other channels. In the current study, the effects of this scoring criterion on reliability and accuracy (validity) of polygraph scores were assessed. Polygraph tests on 26 suspects were evaluated twice by the same examiners. The examiners used the consistency criterion in the first evaluation. In the second evaluation, the examiners were prevented from using the criterion; the signals from each physiological channel were separated and randomly arranged before they were rescored by the same examiner. Reliability was assessed by the variation among the scores for each suspect. Accuracy was assessed by establishing a standard, based on a Latent Class Analysis model, using the results of polygraph tests on each of 182 additional suspects. Reliability and accuracy were both improved by the use of the consistency criterion which therefore was recommended.