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Knowledge of Grocery Shopping Skills as a Mediator of Cognition and Performance

OBJECTIVE: Cognitive impairments in serious mental illness are associated with poorer community outcomes; yet the mechanisms through which cognition limits functioning are unknown. This study examined knowledge of grocery shopping skills as a mediator of cognition and performance of grocery shopping skills. METHODS: Fifty-one individuals with serious mental illness were administered measures of cognition, as well as measures of knowledge and performance of grocery shopping skills. RESULTS: When knowledge of grocery shopping skills was introduced as a mechanism through which cognition influences performance, almost perfect mediation was achieved (slope of the regression dropped from B=.32 to B=.03). CONCLUSIONS: The search for mediators can improve our understanding of how cognition influences community functioning.

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