Abstract:
:Prospective memory (PM), the memory for future intentions, is an essential component of many day-to-day activities. PM accuracy has consistently been found to decline as a function of age and is further impaired in Alzheimer's disease (AD). In the present study, subjective PM failures, PM accuracy, and cost of carrying a PM were recorded in 42 healthy elderly, 34 younger old, and 45 older old AD participants. It was found that PM deficits across the AD cohort did not change as a function of age. In addition, while PM accuracy was impaired compared to age-matched controls, cost of carrying a PM intention did not differ across the three groups. Evidence that AD participants show a reaction time (RT) cost of PM intention alongside an impaired PM accuracy indicates that the PM intention is held, but is not implemented effectively. The fact that the cost is independent of age and dementia suggests that it may not index working memory (WM) resource. At a practical level, the study suggests that for a comprehensive evaluation of PM competence cost of carrying a PM intention should be measured alongside PM accuracy.
journal_name
J Clin Exp Neuropsycholjournal_title
Journal of clinical and experimental neuropsychologyauthors
Farina N,Young J,Tabet N,Rusted Jdoi
10.1080/13803395.2013.844772subject
Has Abstractpub_date
2013-01-01 00:00:00pages
983-92issue
9eissn
1380-3395issn
1744-411Xjournal_volume
35pub_type
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