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OBJECTIVE: This study aimed to determine the relative extent of impairment in social and nonsocial cognitive domains in patients with bipolar disorder compared with schizophrenia patients and healthy comparison subjects. METHODS: Sixty-eight clinically stable outpatients with bipolar disorder, 38 clinically stable outpatients with schizophrenia, and 36 healthy comparison subjects completed a range of social (facial affect perception, emotional regulation, empathic accuracy, mental state attribution, and self-referential memory) and nonsocial (speed of processing, attention/vigilance, working memory, verbal memory, visual memory, and reasoning/problem solving) cognitive tasks. RESULTS: For each social cognitive task, patients with bipolar disorder did not differ significantly from comparison subjects, and both groups performed better than schizophrenia patients. Within the bipolar group, clinical features and medication status were not related to social cognitive performance. Bipolar patients showed performance patterns across tasks (i.e., profiles) that were similar to those of comparison subjects on both social and nonsocial cognitive domains, whereas both groups differed from schizophrenia patients for both domains. Regarding relative impairment across the two cognitive domains, results revealed a significant group-by-domain interaction in which bipolar patients showed less impaired social than nonsocial cognition, while schizophrenia patients showed the opposite pattern. CONCLUSIONS: Bipolar patients showed less impairment on social relative to nonsocial cognitive performance, whereas schizophrenia patients showed more impairment on social relative to nonsocial cognitive performance. These results suggest that these two cognitive domains play different roles in bipolar disorder compared with in schizophrenia.

Original publication

DOI

10.1176/appi.ajp.2012.12040490

Type

Journal article

Journal

Am J Psychiatry

Publication Date

03/2013

Volume

170

Pages

334 - 341

Keywords

Adult, Attention, Bipolar Disorder, Cognition Disorders, Emotional Intelligence, Emotions, Empathy, Facial Expression, Female, Humans, Interpersonal Relations, Male, Memory Disorders, Memory, Episodic, Middle Aged, Neuropsychological Tests, Personal Construct Theory, Problem Solving, Recognition (Psychology), Schizophrenia, Schizophrenic Psychology, Social Adjustment, Social Behavior Disorders, Social Perception, Theory of Mind