Hudson, John and Robertson, Colin (2007) Automatic and controlled uses of memory in Alzheimer’s disease. Cortex, 43 (4). pp. 524-530. ISSN 0010-9452
Full content URL: http://dx.doi.org/10.1016/S0010-9452(08)70246-6
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Automatic_and_controlled_uses_of_memory_in_Alzheimer's_disease.pdf - Whole Document Restricted to Repository staff only 119kB |
Item Type: | Article |
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Item Status: | Live Archive |
Abstract
This study used the process-dissociation procedure (Jacoby, 1991) to examine the contribution of automatic and
controlled uses of memory to a stem completion task in 16 patients with Alzheimer’s disease (AD) and a matched group of healthy elderly subjects (EC). In an inclusion task subjects attempted to use a studied word to complete three-letter word stems, in an exclusion task they were instructed to complete stems with unstudied words. Relative to patients with AD, EC subjects produced more target word completions under inclusion conditions, and less target word completions under exclusion conditions. The probability of the AD group using studied words to complete stems was invariant across inclusion and exclusion conditions. Estimates derived from the process-dissociation calculations, showed that the performance of the AD patients was mediated entirely by automatic uses of memory, whereas for EC subjects controlled and automatic
processes codetermined task performance. Both estimates of controlled and to a lesser extent automatic uses of memory
were greater for the EC than the AD subjects, indicating that the stem completion impairment in AD may not be entirely attributable to a deficiency in controlled memory processes but also due to reduced automatic processing.
Keywords: | Alzheimer's disease, automatic memory processes, process-dissociation procedure, stem completion |
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Subjects: | C Biological Sciences > C800 Psychology C Biological Sciences > C850 Cognitive Psychology C Biological Sciences > C860 Neuropsychology |
Divisions: | College of Social Science > School of Psychology |
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ID Code: | 3427 |
Deposited On: | 07 Oct 2010 16:46 |
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