Differential effects of goal cues on everyday action errors in Alzheimer's disease versus Parkinson's disease dementia.

Objective: Prior research has shown that individuals with Parkinson's disease dementia (PDD) show a different pattern of error types on everyday tasks compared with individuals with Alzheimer's disease (AD). This study evaluated whether these groups would respond differently to cues designed to remind participants of task goals and improve performance of everyday tasks (i.e.

Everyday action impairment in Parkinson's disease dementia.

This study examined everyday action impairment in participants with Parkinson's disease dementia (PDD) by comparison with participants with Parkinson's disease-no dementia (PD) or Alzheimer's disease (AD) and in reference to a neuropsychological model. Participants with PDD (n = 20), PD (n = 20), or AD (n = 20) were administered performance-based measures of everyday functioning that allowed for the quantification of overall performance and error types. Also, caregiver ratings of functional independence were obtained.