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ISSN : 1229-067X

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Vol.23 No.2
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정신분열병 환자의 전두엽-관리기능

Frontal-executive functions in schizophrenic patients.

한국심리학회지: 일반 / Korean Journal of Psychology: General, (P)1229-067X; (E)2734-1127
2004, v.23 no.2, pp.23-43
서석교 (서귀포시 청소년상담실)
김홍근 (대구대학교)
서석교, & 김홍근. (2004). 정신분열병 환자의 전두엽-관리기능. 한국심리학회지: 일반, 23(2), 23-43.
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초록

본 연구는 45명의 정신분열병 환자와 27명의 정상인을 대상으로 전두엽-관리기능을 비교하였다. 측정 도구로는 EXIT(Executive Intelligence Test)를 사용하였으며, 비교를 위하여 지능검사(K-WAIS)와 기억검사(Rey-Kim 기억검사)도 함께 실시하였다. 주요 결과는 다음과 같았다. 첫째, 정신분열병군은 시공간지수, 주의력지수, 기억지수, 관리지능지수 각각에서 통제군 보다 유의미하게 낮았다. 그러나 양 집단의 차이는 관리지능지수에서 가장 현저하였다. 둘째, EXIT에서 산출되는 4개의 ‘차이 점수’(difference score)는 기존의 점수들에 비해 보다 순수한 관리기능지표로 해석할 수 있다. 이 4개의 차이 점수 각각에서 정신분열병군은 통제군에 비해 유의미하게 낮았다. 셋째, 정신분열병군에서 지능지수, 기억지수, 관리지능지수 중 어느 하나라도 경계선이하(즉 79이하)인 환자는 25명이었다. 이 중 24명(96%)이 관리지능지수에서 결손을 보였다. 그러므로 관리지능지수의 결손이 없는 상태에서 지능지수나 기억지수의 단독적 결손을 보이는 정신분열병 환자는 극히 드물었다. 이상의 결과는 정신분열병군이 다수의 인지 영역에서 결손이 있지만 그 중에서도 관리기능의 결손이 가장 심함을 제시한다.

keywords
schizophrenia, executive function, neuropsychological test, schizophrenia, executive function, neuropsychological test, 정신분열병, 관리기능, 신경심리검사

Abstract

The present study investigated frontal-executive functions in 45 schizophrenic patients and 27 normal control subjects. All subjects were administered Executive Intelligence Test (EXIT), K-Wechsler Adult Intelligence Scale (K-WAIS) and Rey-Kim Memory Test (RKMT). The major findings were as follows. Firstly, the difference between the schizophrenia group and the control group was most pronounced in executive intelligence quotient (EIQ) compared with the difference in verbal comprehension index (VCI), perceptual organization index (POI), freedom-from-distractibility index (FDI), and memory quotient (MQ). Secondly, the 4 difference scores of the EXIT are relatively pure measures of executive functions. The schizophrenic group was significantly lower than the control group in each difference score. Thirdly, of the schizophrenic group, 25 showed a clinically defective performance (i.e., ≤79) in at least one of the three summary measures--EIQ, MQ, and full-scale intelligence quotient (FIQ). Of these 25, 24 (96%) showed a defective performance in EIQ. These results suggest that frontal-executive function is one of the most defective cognitive functions in schizophrenia.

keywords
schizophrenia, executive function, neuropsychological test, schizophrenia, executive function, neuropsychological test, 정신분열병, 관리기능, 신경심리검사

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