Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-28479
Ecker, U K H; Lewandowsky, S; Oberauer, Klaus; Chee, A E H (2010). The components of working memory updating: an experimental decomposition and individual differences. Journal of Experimental Psychology: Learning, Memory, and Cognition, 36(1):170-189.
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Working memory updating (WMU) has been identified as a cognitive function of prime importance for everyday tasks and has also been found to be a significant predictor of higher mental abilities. Yet, little is known about the constituent processes of WMU. We suggest that operations required in a typical WMU task can be decomposed into 3 major component processes: retrieval, transformation, and substitution. We report a large-scale experiment that instantiated all possible combinations of those 3 component processes. Results show that the 3 components make independent contributions to updating performance. We additionally present structural equation models that link WMU task performance and working memory capacity (WMC) measures. These feature the methodological advancement of estimating interindividual covariation and experimental effects on mean updating measures simultaneously. The modeling results imply that WMC is a strong predictor of WMU skills in general, although some component processes—in particular, substitution skills—were independent of WMC. Hence, the reported predictive power ofWMUmeasures may rely largely on common WM functions also measured in typical WMC tasks, although substitution skills may make an independent contribution to predicting higher mental abilities.
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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||06 Faculty of Arts > Institute of Psychology|
|Dewey Decimal Classification:||150 Psychology|
|Uncontrolled Keywords:||working memory, memory updating, structural equation modeling, individual differences|
|Deposited On:||29 Jan 2010 13:36|
|Last Modified:||22 Jan 2015 09:58|
|Publisher:||American Psychological Association|
|Other Identification Number:||10.1037/a0017891|
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