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Learning strategies in amnesia

Speekenbrink, M; Channon, S; Shanks, DR; (2008) Learning strategies in amnesia. NEUROSCI BIOBEHAV R , 32 (2) 292 - 310. 10.1016/j.neubiorev.2007.07.005. Green open access

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Abstract

Previous research suggests that early performance of amnesic individuals in a probabilistic category learning task is relatively unimpaired. When combined with impaired declarative knowledge, this is taken as evidence for the existence of separate implicit and explicit memory systems. The present study contains a more fine-grained analysis of learning than earlier studies. Using a dynamic lens model approach with plausible learning models, we found that the learning process is indeed indistinguishable between an amnesic and control group. However, in contrast to earlier findings, we found that explicit knowledge of the task structure is also good in both the amnesic and the control group. This is inconsistent with a crucial prediction from the multiple-systems account. The results can be explained from a single system account and previously found differences in later categorization performance can be accounted for by a difference in learning rate. (c) 2007 Elsevier Ltd. All rights reserved.

Type: Article
Title: Learning strategies in amnesia
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.neubiorev.2007.07.005
Keywords: amnesia, learning, weather prediction task, explicit and implicit memory, computational models, MEMORY-SYSTEMS, PARKINSONS-DISEASE, IMPLICIT PROCESSES, NETWORK MODEL, CLASSIFICATION, CATEGORIZATION, VARIABILITY, RECOGNITION, PERFORMANCE, INTACT
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Experimental Psychology
URI: https://discovery.ucl.ac.uk/id/eprint/14463
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