정신분열병 환자의 사회인지 능력 평가척도 개발
The Assessment of Social Cognitive Ability for Schizophrenia
현명호 (중앙대학교)
김창윤 (울산대학교)
초록
본 연구는 동영상을 사용하여 정신분열병 환자들의 사회인지 능력을 객관적으로 평가할 수 있는 도구를 개발하고, 심리적 속성을 분석하였다. 도구개발을 위해 정신분열병 환자들이 일상생활에서 빈번하게 나타내는 상황에 부적절한 행동과 관련된 일화들을 수집하여, 동영상 제작을 위한 시나리오를 구성하고 동영상을 제작하였다. 30개의 장면으로 구성된 정신분열병 환자의 사회인지 능력 평가척도는 서울과 대전에 소재하고 있는 대학병원의 외래환자 93명과 일반인 175명에게 실시하여 신뢰도와 타당도, 문항특성을 분석하였다. 정신분열병 환자의 사회인지 능력 평가척도의 내적 일치도는 .91, 평정자간 일치도는 .79로 높은 신뢰도를 보였다. 문항난이도와 변별도에 대한 분석 결과, 정신분열병 환자의 사회인지 능력 평가척도의 문항들은 매우 쉽거나 쉬운 범주에 속하고 문항 변별도는 모든 문항이 적절한 수준 이상에 속하는 것으로 나타났으며, 피험자 능력 점수를 비교한 결과 환자집단과 통제 집단간의 유의한 차이를 보여, 정신분열병 환자의 사회인지 능력 평가척도가 두 집단을 구분할 수 있음을 보여주었다. 결론적으로 정신분열병 환자의 사회인지 능력 평가척도는 높은 신뢰도와 타당도를 갖고 있으며, 문항 특성 또한 정신분열병 환자의 사회인지 능력을 평가하는데 유용한 도구로 사용될 수 있음을 시사하고 있다.
- keywords
- schizophrenia, social cognition, reliability, validity, item analysis, 정신분열병, 사회인지, 평가척도, 신뢰도, 타당도, 문항분석, schizophrenia, social cognition, reliability, validity, item analysis
Abstract
In this study a simulated, sensitive video-based instrument for the evaluation of social cognition of schizophrenia was developed: The Assessment tool of Social Cognitive Ability for Schizophrenia (ASCAS). Realization of the instrument entailed the development of scripts, the scenes of the actual movie steering actors and post processing of the video clips with subsequent test-formating. The ASCAS was operationalized social cognition through video, approximating social interactions the way they actually happen in everyday life. The psychometric adequacy of ASCAS was investigated by the use of item-response model (two parameter logistic models). The data were analysed by LTM (latent trait models under IRT) 0.7-1module. The internal consistency, interrater reliability and convergent validity was analyzed by SPSS 12.0K for windows. Major findings of this study were as follows: Test of goodness-of-fit was revealed that items of ASCAS were fitted for two parameter logistic model. The item difficulty parameter of ASCAS expressed that the difficulty level of item is low and the discrimination parameter showed that items of ASCAS distinguished between subjects with low/high standing in this scale. According to the Test Information Curve the items asked in ASCAS provided information for subjects with low ability. The internal consistency(.91) and the interrater reliability(.78) were pertinent. Through the ASCAS factors related with social cognition were examined. Results showed that negative symptoms and general social functioning were correlated with social cognition.
- keywords
- schizophrenia, social cognition, reliability, validity, item analysis, 정신분열병, 사회인지, 평가척도, 신뢰도, 타당도, 문항분석, schizophrenia, social cognition, reliability, validity, item analysis
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