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• W2011773017 abstract "Background Significant neuropsychological (NP) and functional deficits are found in most schizophrenia patients. Previous studies have left questions as to whether global NP impairment or discrete domains affect functional outcomes, and none have addressed distinctions within and between ability and performance domains. This study examined the different predictive relationships between NP domains, functional competence, social competence, symptoms, and real-world behavior in domains of work skills, interpersonal relationships, and community activities. Methods Two hundred twenty-two schizophrenic outpatients were tested with an NP battery and performance-based measures of functional and social competence and rated for positive, negative, and depressive symptoms. Case managers generated ratings of three functional disability domains. Results Four cognitive factors were derived from factor analysis. Path analyses revealed both direct and mediated effects of NP on real-world outcomes. All NP domains predicted functional competence, but only processing speed and attention/working memory predicted social competence. Both competence measures mediated the effects of NP on community activities and work skills, but only social competence predicted interpersonal behaviors. The attention/working memory domain was directly related to work skills, executive functions had a direct effect on interpersonal behaviors, and processing speed had direct effects on all three real-world behaviors. Symptoms were directly related to outcomes, with fewer relationships with competence. Conclusions Differential predictors of functional competence and performance were found from discrete NP domains. Separating competence and performance provides a more precise perspective on correlates of disability. Changes in specific NP or functional skills might improve specific outcomes, rather than promoting global functional improvement. Significant neuropsychological (NP) and functional deficits are found in most schizophrenia patients. Previous studies have left questions as to whether global NP impairment or discrete domains affect functional outcomes, and none have addressed distinctions within and between ability and performance domains. This study examined the different predictive relationships between NP domains, functional competence, social competence, symptoms, and real-world behavior in domains of work skills, interpersonal relationships, and community activities. Two hundred twenty-two schizophrenic outpatients were tested with an NP battery and performance-based measures of functional and social competence and rated for positive, negative, and depressive symptoms. Case managers generated ratings of three functional disability domains. Four cognitive factors were derived from factor analysis. Path analyses revealed both direct and mediated effects of NP on real-world outcomes. All NP domains predicted functional competence, but only processing speed and attention/working memory predicted social competence. Both competence measures mediated the effects of NP on community activities and work skills, but only social competence predicted interpersonal behaviors. The attention/working memory domain was directly related to work skills, executive functions had a direct effect on interpersonal behaviors, and processing speed had direct effects on all three real-world behaviors. Symptoms were directly related to outcomes, with fewer relationships with competence. Differential predictors of functional competence and performance were found from discrete NP domains. Separating competence and performance provides a more precise perspective on correlates of disability. Changes in specific NP or functional skills might improve specific outcomes, rather than promoting global functional improvement." @default.
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• W2011773017 date "2008-03-01" @default.
• W2011773017 modified "2023-10-12" @default.
• W2011773017 title "Predicting Schizophrenia Patients’ Real-World Behavior with Specific Neuropsychological and Functional Capacity Measures" @default.
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• W2011773017 doi "https://doi.org/10.1016/j.biopsych.2007.05.022" @default.
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