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판단자의 부정적 감정과 거짓말 판단과의 관계에서 확실성의 매개효과 검증: 분노와 슬픔을 중심으로

Mediating effect of Certainty on the Relationship between negative affect and the detection of deception: The differential impact of anger and sadness

한국심리학회지: 사회 및 성격 / Korean Journal of Social and Personality Psychology, (P)1229-0653;
2015, v.29 no.2, pp.57-70
https://doi.org/10.21193/kjspp.2015.29.2.004
박희정 (대구지방경찰청 과학수사계)
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초록

본 연구는 판단 확실성이 부정적 감정과 거짓말 판단과의 관계를 매개하는지 알아보고자 진행되었다. 본 연구의 실험은 분노와 슬픔을 경험한 에피소드를 작성하게 하는 것으로 감정을 유도하였으며, 중성조건의 경우 분노도 슬픔도 유도되지 않는 아침에 일어나서 한 일을 작성하도록 하였다. 감정 에피소드 작성을 마친 후 모든 조건의 참가자들에게 진실영상과 거짓영상을 시청하게 하고 각 영상의 진실유무를 판단하도록 하였다. 분석결과, 분노를 느낄수록 거짓말 판단 정답율이 더 낮게 나타났다. 이러한 관계를 판단 확실성이 매개하는지 검증하기 위해 Baron과 Kenny(1986)가 제안한 절차에 따라 매개분석을 실시한 결과 완전매개효과가 나타났다. 즉 분노상태에서는 자신의 판단에 대해서 확신이 높기 때문에 더 체계적으로 정보를 처리할 필요성이 낮아져 정답율이 저하되는 반면, 슬픔상태에서는 자신의 판단에 대한 확신이 떨어지기 때문에 보다 체계적으로 정보를 처리하고자하여 정답율이 높아진 것으로 해석된다. 본 연구는 감정과 거짓말 판단과의 관계에서 판단 확실성의 매개효과를 보여줌으로써 감정이 어떠한 프로세스로 거짓말 판단에 영향을 주는지 그 과정에 대해서 명확히 하고자 하였다. 이러한 연구결과는 향후 거짓말 탐지 연구에 유용한 정보를 제공할 것으로 판단된다.

keywords
거짓말 판단, 분노, 슬픔, 확실성, 정보처리방식, 매개효과, detection of deception, anger, sadness, certainty, information-processing strategies, mediating effect

Abstract

The purpose of this study is to examine the influence of negative affect on the detection of deception and how certainty would mediate the relationship. In the experiment, participants were instructed to recall and write about anger and sad episodes. In the neutral conditions, participants were asked to write the mundane events of the previous day. After affect induction, participants viewed deceptive or truthful interviews films. They made judgments about the targets’ truthfulness. As predicted, anger individuals achieved lower accuracy rates than sad individuals. Moreover, mediation analysis demonstrated that anger individuals would have comparatively lower accuracy rates on judgments because they had higher certainty about their judgments. Sad individuals, in contrast, had less confidence when making judgments so they led to systematic processing and achieved higher accuracy rates. These results show that there were the difference of judgmental accuracy rates in the condition of two negative affects and certainty mediated the relationship between negative affect and the detection of deception.. Theoretical and practical implications of these results are discussed.

keywords
거짓말 판단, 분노, 슬픔, 확실성, 정보처리방식, 매개효과, detection of deception, anger, sadness, certainty, information-processing strategies, mediating effect

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한국심리학회지: 사회 및 성격