Separating item-related electrophysiological indices of retrieval effort and retrieval orientation

Dzulkifli, Mariam Adawiah and Sharpe, Helen L. and Wilding, Edward (2004) Separating item-related electrophysiological indices of retrieval effort and retrieval orientation. Brain and Cognition, 55 (3). pp. 433-443. ISSN 0278-2626

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Abstract

The relationship between two classes of retrieval process—retrieval orientation and retrieval effort—was investigated using electrophysiological (ERP) and behavioural measures. ERPs were recorded during retrieval phases of exclusion tasks in which participants focused on retrieval of either phonological or semantic associates that were generated in a prior study phase. Participants were separated into two groups on the basis of the relative accuracy of their memory judgments in the retrieval tasks (high vs. low relative difficulty) as a means of assessing retrieval effort. The critical contrasts were between the ERPs evoked by unstudied test items separated according to group and emphasis of the retrieval task (semantic vs. phonological). Reliable differences according to task were evident in the high relative difficulty group only. This finding is consistent with the view that, for this task pair at least, ERPs are sensitive to the processes set in train in pursuit of task relevant information (retrieval orientations) only when relative difficulty is high.

Item Type:	Article (Journal)
Additional Information:	2283/12053
Uncontrolled Keywords:	Retrieval orientation; Retrieval effort; Event-related potentials; Episodic memory; Retrieval mode
Subjects:	B Philosophy. Psychology. Religion > BF Psychology Q Science > Q Science (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Islamic Revealed Knowledge and Human Sciences > Department of Psychology
Depositing User:	Dr Mariam Adawiah Dzulkifli
Date Deposited:	01 Feb 2012 14:48
Last Modified:	01 Feb 2012 14:48
URI:	http://irep.iium.edu.my/id/eprint/12053

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