Word-frequency effects on short-term memory tasks: evidence for a redintegration process in immediate serial recall |
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Authors: | C Hulme S Roodenrys R Schweickert GD Brown M Martin G Stuart |
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Affiliation: | Department of Psychology, University of York, United Kingdom. CHI@york.ac.uk |
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Abstract: | Four experiments investigated the mechanisms responsible for the advantage enjoyed by high-frequency words in short-term memory tasks. Experiment 1 demonstrated effects of word frequency on memory span that were independent of differences in speech rate. Experiments 2 and 3 showed that word frequency has an increasing effect on serial recall across serial positions, but Experiment 4 showed that this effect was abolished for backward recall. A model that includes a redintegration process that operates to "clean up" decayed short-term memory traces is proposed, and the multinomial processing tree model described by R. Schweickert (1993) is used to provide a quantitative fit to data from Experiments 2, 3, and 4. |
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