Developmental Theory for a Cognitive Enhancement Therapy of Schizophrenia

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Abstract
Recent findings on psychosocial and neurodevelopmental anomalies in schizophrenia patients indicate that deficits related to social cognition—the ability to act wisely in social interactions—may be important constraints on complete social and vocational recovery. Social cognition is acquired over many decades and appears to be partially independent of formal IQ and neuropsychological problems. It invites a more developmental approach to the rehabilitation of schizophrenia, one that we call Cognitive Enhancement Therapy (CET). CET draws on an emerging literature that implicates both pre- and postonset neurodevelopmental difficulties, as well as a complementary literature on diffuse neuropsychological impairments that supports the notion of a neurodevelopmental insult. We analyzed evidence for an associated developmental basis to social cognitive impairment in the context of a model that addressed both the acquisition of interpersonal wisdom and the adaptive process that might follow developmental failures. A contemporary model of human cognition is then used to identify the metacognitive functions that characterize the developmental acquisition of normal cognition and, by inference, the associated difficulties of many patients with schizophrenia. A rehabilitation strategy for schizophrenia, designed to facilitate the metacognitive transition from prepubertal to young adult social cognition, would thus emphasize developmental learning experiences during the remediation of social cognitive deficits. A “gistful” appraisal of interpersonal behavior and novel social contexts best reflects the theoretical intent of this new intervention.

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