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Posterior distribution analysis of the retention of briefly studied words


Averell, L and Heathcote, A, Posterior distribution analysis of the retention of briefly studied words, ASCS09: Proceedings of the 9th Conference of the Australasian Society for Cognitive Science, 30 September - 2 October 2009, Sydney, Australia ISBN 978-0-646-52918-9 (2010) [Refereed Conference Paper]

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Copyright 2009 Australasian Society for Cognitive Science

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DOI: doi:10.5096/ASCS20092


The way in which memories decline over time has been studied for over a century, but remains an unresolved issue because of a lack of sufficiently precise data and effective model selection techniques. Here we address this gap with a particular focus on whether the decline in memory retention is complete or asymptotes above chance performance. We collected stem cued recall and stem completion data with tighter control over levels of interference and more data per retention interval than most previous studies. We analyzed the data using Hierarchal Bayesian models free from assumptions regarding the functional form of the forgetting curve. Population distribution estimate of retention at one hour well above the chance completion rate provided strong evidence for the use asymptote parameters in models of retention regardless of the functional form of the model.

Item Details

Item Type:Refereed Conference Paper
Research Division:Psychology
Research Group:Cognitive and computational psychology
Research Field:Decision making
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in psychology
UTAS Author:Heathcote, A (Professor Andrew Heathcote)
ID Code:98952
Year Published:2010
Deposited By:Medicine
Deposited On:2015-03-10
Last Modified:2016-02-16

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