More is generally better: Higher working memory capacity does not impair perceptual category learning

Michael L. Kalish, Ben R. Newell, John C. Dunn

Research output: Contribution to journalArticle

8 Citations (Scopus)
43 Downloads (Pure)

Abstract

It is sometimes supposed that category learning involves competing explicit and procedural systems, with only the former reliant on working memory capacity (WMC). In 2 experiments participants were trained for 3 blocks on both filtering (often said to be learned explicitly) and condensation (often said to be learned procedurally) category structures. Both experiments (total N = 160) demonstrated that participants with higher WMC tended to be more accurate in condensation tasks, but not less accurate in filtering tasks. Furthermore, state-trace analysis did not find a differential influence of WMC on performance in these tasks. Finally, inspection of the mixture of response strategies at play across the 2 conditions and 3 blocks showed only a minor influence of WMC, and then only on later training blocks. The results provide no support for the existence of a "system" of category learning that is independent of working memory and are instead consistent with most single-system interpretations of category learning.

Original languageEnglish
Pages (from-to)503-514
Number of pages12
JournalJournal of Experimental Psychology: Learning Memory and Cognition
Volume43
Issue number4
DOIs
Publication statusPublished - 1 Apr 2017

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