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The Korean Journal of Cognitve & Biological Psychology - Vol. 33, No. 3

[ Original Article ]
The Korean Journal of Cognitve & Biological Psychology - Vol. 33, No. 3, pp.143-162
Abbreviation: KCBPA
ISSN: 1226-9654 (Print)
Print publication date 30 Jul 2021
Received 04 Feb 2021 Revised 21 Jun 2021 Accepted 23 Jun 2021
DOI: https://doi.org/10.22172/cogbio.2021.33.3.003

조현형 성격 성향을 가진 대학생의 1인칭-3인칭 관점취하기에 관한 사건관련전위 연구
장윤정 ; 김명선
성신여자대학교 심리학과

An event-related potential study of perspective taking in college students with schizotypal traits
Yoonjeong Jang ; Myung-Sun Kim
Department of Psychology, Sungshin University
Correspondence to : 김명선, 성신여자대학교 심리학과, 서울시 성북구 보문로 34다길 2 Tel: 02-920-7592, Fax: 02-920-2040, E-mail: kimms@sungshin.ac.kr


ⓒ The Korean Society for Cognitive and Biological Psychology

초록

본 연구는 조현형 성격 성향을 가진 대학생의 관점취하기 특성을 Own Body Transformation(OBT) 과제와 사건관련전위를 사용하여 알아보았다. 조현형 성격 설문지(Schizotypal Personality Questionnaire: SPQ) 점수에 근거하여 정상통제군(n=24)과 조현형 성격 성향군(n=22)을 선정하였다. OBT 과제는 신체 도식과 관련된 관점취하기에 필요한 인지 과정을 알아보고자 고안된 과제로, 오른손 혹은 왼손에 장갑을 낀 사람의 뒷모습(1인칭관점)과 앞모습(3인칭관점)으로 구성되어 있고, 장갑이 왼손 혹은 오른손 중 어느 손에 끼워져 있는지를 판단하는 것이 요구된다. OBT 과제의 반응시간을 분석한 결과, 두 집단 모두 1인칭관점보다 3인칭관점에서 더 긴 반응시간을 보였고, 조현형 성격 성향군이 정상통제군에 비하여 1인칭 및 3인칭관점 모두에서 유의하게 더 긴 반응시간을 보였다. 반면, 반응정확률의 경우, 두 집단 간에 유의한 차이가 관찰되지 않았으나, 두 집단 모두 1인칭관점보다 3인칭관점에서 더 낮은 반응정확률을 보였다. 사건관련전위의 경우, 두 집단 모두 1인칭관점보다 3인칭관점에서 유의하게 더 큰 P100, N200 진폭을 보였고, 3인칭관점보다 1인칭관점에서 더 큰 P300 진폭을 보였다. 또한, 조현형 성격 성향군이 정상통제군에 비하여 1인칭 및 3인칭관점 모두에서 유의하게 더 긴 P300 잠재기를 보였다. 조현형 성격 성향군의 경우, 두정 영역에서 측정한 P300 진폭과 SPQ의 와해 점수 간에 유의한 부적 상관이 관찰된 한편, 전체 연구참여자를 대상으로 한 상관분석 결과 두정 영역에서 측정한 P300 잠재기와 SPQ의 양성 점수 및 총 점수 사이에 유의한 정적 상관이 관찰되었다. 본 연구 결과는 조현형 성격 성향군이 관점취하기뿐만 아니라 시공간 능력의 어려움을 가지고 있을 가능성과 P300 잠재기가 관점취하기의 유용한 전기생리적 지표일 가능성을 시사한다.

Abstract

This study investigated the abilities of perspective taking in college students with schizotypal traits using Own Body Transformation (OBT) task and event-related potentials (ERPs). Based on the scores of Schizotypal Personality Questionnaire (SPQ), participants were assigned into the control (n=24) and schizotypal trait (n=22) groups. The OBT task consisted of back-facing (first-person perspective) and front-facing (third-person perspective) conditions where a person wearing a glove on his/her right or left hand. Participants were required to respond to the location of the glove by pressing a response button. The behavioral results of the OBT task showed that the schizotypal trait group exhibited significantly longer reaction times in both the first-person and third-person perspective conditions than the control group. However, the two groups did not differ in the accuracy rates. Both groups also showed significantly longer reaction times and lower accuracy rates in response to the third-person perspective condition than to the first-person perspective condition. In terms of ERPs, the schizotypal trait and control groups showed significantly larger P100 amplitudes in the third-person perspective condition than the first-person perspective condition, and both groups showed significantly larger N200 amplitudes in the third-person perspective condition than the first-person perspective condition. Both groups showed larger P300 amplitudes in the first-person perspective condition than the third-person perspective condition. In addtion, the schizotypal trait group showed significantly longer P300 latencies than control group in both conditions. Finally, a significant negative correlation between disorganization score of the SPQ and P300 amplitude was observed in the schizotypal trait group, and significant positive correlations between the positive score, total score of the SPQ and P300 latency were observed in all participants. Present results indicate that the schizotypal trait group may have difficulties in visuospatial and mental rotation abilities, and that P300 latency could serve as an electrophysiological index of perspective taking.


Keywords: schizotypal traits, perspective taking, first-person perspective, third-person perspective, event-related potentials
키워드: 조현형 성격 성향군, 관점취하기, 1인칭관점, 3인칭관점, 사건관련전위

Acknowledgments

이 논문은 장윤정의 석사논문을 수정 보완한 것임.


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