A Study on the Voice and Speech of Deception

본 연구의 목적은 거짓말을 할 때 나타나는 음성 및 발화행동의 특징을 탐색하는 것이었다. 실험참가자는 시험과 관련된 부정행위를 조작하는 세 집단에 할당되었다: 부정행위를 부인하면 거짓집단(20명), 부정행위를 시인하면 진실집단(5명), 부정행위가 없었던 경우 통제집단(15). 참가자에게 부정행위와 관계없는 질문과 관계있는 질문을 하여 음성 및 발화행동 측정치로 평균음절수, 평균응답지연시간, 평균휴지기지속시간, 평균휴지기빈도, 평균휴지기비율, 평균전체발화시간, 평균발화속도, 평균조음속도, 평균발화오류빈도를 측정하고 반복측정 변량분석을 실시하였다. 그 결과, 거짓 집단과 진실집단에서 평균휴지기지속시간, 평균휴지기빈도, 평균휴지기비율, 평균발화오류빈도가 사건무관련조건에 비해 사건관련조건에서 높게 나타났고, 평균발화속도는 사건무관련조건에 비해 사건관련조건에서 거짓 집단은 느렸고, 진실집단은 빨랐다. 그러나 통제집단에서는 응답조건간 음성 및 발화행동의 차이가 없었다. 이러한 결과는 음성 및 발화행동의 특징 중 일부를 활용하여 수사에서 진술의 진위판단에 적용할 수 있음을 보여준다. 하지만 본 연구에서 거짓집단과 진실집단의 반응이 유사한 점을 볼 때 진술의 진위여부 뿐만 아니라 범죄행위의 관여여부도 음성 및 발화행동에 영향을 미칠 수 있음을 시사한다. 마지막으로 본 연구의 제한점과 추후연구의 제안점이 논의하였다.

keywords: deception, voice, speech behavior, deception, voice, speech behavior, 거짓말, 음성, 발화행동

Abstract

The aim of this study is to investigate the voice and speech of deception. Participants were induced to tell a spontaneous lie of cheating. Participants were assigned to 3 groups: lie group(20 peoples), true group(5 peoples), and control group(15 peoples). All of participants were asked questions relevant to the cheating and questions irrelevant to the cheating. The measurement of voice and speech were mean of syllable number, mean of response latency period, mean of total pause period, mean of pause frequency, mean of pause rate, mean of total speech duration, mean of speech rate, mean of articulation rate and mean of speech error frequency. We conducted repeated measures ANOVA to investigate the effect of group and response content condition on the voice and speech character. Results showed that in the lie and the true group, total pause period of relevant condition was longer, pause frequency, pause rate and speech error frequency of relevant condition were higher than them of irrelevant condition. Speech rate of relevant condition was lower than them of irrelevant condition in lie group, but faster in true group. But in control group, there was no difference between relevant and irrelevant conditions. Results indicate that there are useful of a lie detector using voice variances in criminal investigation agency. However, similarities between the lie group and true group suggest that there are probably the effect of committing a crime on voice and speech variances as well as deception. Finally, the limitations of this study were discussed with suggestions for the future study.

keywords: deception, voice, speech behavior, deception, voice, speech behavior, 거짓말, 음성, 발화행동

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논문 상세

Vol.27 No.1

거짓말의 음성 및 발화행동 특징 연구성인애착과 성별에 따른 대학생 사회불안의 차이

A Study on the Voice and Speech of Deception

초록

Abstract

참고문헌

한국심리학회지: 일반