Different cognitive profiles on standard behavioral tests in Parkinson's disease and Alzheimer's disease

J Clin Exp Neuropsychol. 1989 Dec;11(6):799-820. doi: 10.1080/01688638908400937.


Patients with Parkinson's disease (PD) displayed a different pattern of cognitive deficit from patients with dementia resulting from Alzheimer's disease (AD). Specifically, PD patients, whether or not impaired on a mental status examination, had deficient Picture Arrangement but normal Vocabulary test scores whereas AD patients were impaired on both measures. Furthermore, PD patients with impaired mental status examination scores showed a deficit in set formation on Picture Arrangement not seen in the AD patients. Finally, when recent memory performance, as measured by the Wechsler Memory Scale, was predicted from an estimated IQ, 71% of PD patients who had normal mental status examination scores were seen to have at least a mild memory impairment.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Aged
  • Alzheimer Disease / psychology*
  • Attention
  • Concept Formation
  • Dementia / psychology*
  • Female
  • Humans
  • Intelligence
  • Male
  • Memory*
  • Memory, Short-Term
  • Mental Recall*
  • Mental Status Schedule
  • Middle Aged
  • Neuropsychological Tests*
  • Parkinson Disease / psychology*
  • Pattern Recognition, Visual
  • Psychometrics
  • Verbal Learning