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Korean J Schizophr Res > Volume 16(2); 2013 > Article
Korean Journal of Schizophrenia Research 2013;16(2):69-79.
DOI: https://doi.org/10.16946/kjsr.2013.16.2.69    Published online October 31, 2013.
Characteristics of Social Perception and their Changes after Treatment in Patients with Schizophrenia Using the Idea of Reference Provoking Task.
Seungjin Choi, Il Ho Park, Seon Koo Lee, Jae Jin Kim
1Department of Psychiatry, Yonsei University College of Medicine, Seoul, Korea. jaejkim@yonsei.ac.kr
2Department of Psychiatry, Kwandong University College of Medicine, Gangreung, Korea.
3Department of Psychiatry, Ilsan Hospital, National Health Insurance Corporation, Ilsan, Korea.
4Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, Korea.
Patients with schizophrenia often present idea of reference in social situations, but there has been a limitation in quantitatively measuring their reactions to the social stimuli. The aim of this study was to investigate behavioral characteristics of patients with schizophrenia in social situations in which idea of reference can be provoked.
Forty subjects with schizophrenia (21 males) and 26 healthy volunteers (17 males) performed the idea-of-reference-provoking task, which was composed of movie clips with scenes of two women sitting on a bench of 1 or 5 m away. The conditions consisted of "referential conversation", "non-referential conversation" or "no conversation". The reactions of the participants were rated by the questionnaires for self-referential perception, malevolent interpretation and anxiety reaction.
There were significant group differences in the reactions on self-referential perception, malevolent interpretation and anxiety reaction. After the treatment, patients with schizophrenia showed improved scores of the reactions. In particular, score changes of malevolent interpretation and anxiety reaction in patients with schizophrenia were correlated with change of paranoia scale (rs=0.65, p<0.05 and rs =0.73, p<0.05, respectively).
Patients with schizophrenia revealed self-referential bias and paranoid responses to social situations, which were improved after psychiatric treatment. Self-referential perceptions and paranoid responses may be state dependent rather than trait of schizophrenia.
Key Words: Schizophrenia · Idea of reference · Social perception · Social cognition


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