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The Korean Journal of Health Psychology

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Vol.20 No.1

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The usefulness of the Concealed Information Test using an Eye Tracker

The Korean Journal of Health Psychology / The Korean Journal of Health Psychology, (P)1229-070X; (E)2713-9581
2015, v.20 no.1, pp.53-67
https://doi.org/10.17315/kjhp.2015.20.1.004



& (2015). The usefulness of the Concealed Information Test using an Eye Tracker. The Korean Journal of Health Psychology, 20(1), 53-67, https://doi.org/10.17315/kjhp.2015.20.1.004

Abstract

The purpose of this study was to examine the attentional bias of the guilty through the Concealed Information Test (CIT) using an Eye Tracker. In other words, we examined whether the CIT using an Eye Tracker could distinguish three different groups; a guilty group, an innocent group, and another innocent group with concealed information. We separated the participants into a guilty group of 19 individuals, an innocent group of 16 individuals, and another innocent group of 16 individuals with concealed information (e.g., which item was stolen). Participants were first asked to recreate the situation in which the crime had occurred, then were provided with relevant stimulus and irrelevant stimuli. Finally, we examined participants' eye movements following the stimuli using an Eye Tracker. The results showed that groups with information such as the guilty group and the innocent group with concealed information gazed at the irrelevant stimuli longer than at the relevant stimulus. There was also a difference between the groups in the number of eye movements and gazes at the relevant stimulus. These results indicated that individuals who commit a crime or have relevant information are conscious of the relevant stimulus and try to avoid it. Moreover, their eye movements were restrained. This study examined the accuracy and the validity of the CIT using an Eye Tracker. Thus, the study has significance in that it could contribute to an increase in the practical applicability of CIT.

keywords
Lie detection, Eye Tracker, Concealed Information Test(CIT), Eye movement, 거짓말 탐지, Eye Tracker, 숨김정보검사(CIT), 안구움직임

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