This study examined the clinical correlates of lack of insight in bipolar disorder. In 28 acutely manic patients interviewed upon hospitalization and/or discharge, mean scores on the Insight and Treatment Attitudes Questionnaire (ITAQ) improved only slightly, from 12.0 on admission to 15.5 on discharge (p = .08), despite marked improvement in other psychiatric symptoms. A reciprocal relationship was found between higher ITAQ scores and involuntary hospitalization (r = -.38). Like schizophrenia, bipolar disorder appears to be a condition in which poor insight is a prominent characteristic.
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Ghaemi et al. (1995) studied this question.