Individual differences in working memory capacity and episodic retrieval: examining the dynamics of delayed and continuous distractor free recall |
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Authors: | Unsworth Nash |
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Institution: | Department of Psychology, University of Georgia, Athens, GA 30602-3013, USA. nunswor@uga.edu |
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Abstract: | Two experiments explored the possibility that individual differences in working memory capacity (WMC) partially reflect differences in the size of the search set from which items are retrieved. High- and low-WMC individuals were tested in delayed (Experiment 1) and continuous distractor (Experiment 2) free recall with varying list lengths. Across both experiments low-WMC individuals recalled fewer items than high-WMC individuals, recalled more previous list intrusions than high-WMC individuals, and recalled at a slower rate than high-WMC individuals. It is argued that low-WMC individuals' episodic retrieval deficits are partially due to the fact that these individuals search through a larger set of items than high-WMC individuals. Simulations based on a random search model were consistent with these general conclusions. |
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