Variability in conceptual and methodological approaches and inconsistencies in the reported findings have prevented firm conclusions from being drawn. However, the literature provided support for a relationship between non-cognitive features in dementia and psychological problems in caregivers, and suggested possible associations between cognitive deficits and some negative care-giver outcomes. New methodological and conceptual approaches are required if decisive evidence is to be forthcoming. This information is a prerequisite for investigations into the causal mechanisms that sustain these relationships, and for rationally designed interventions.
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