Abstract
The linear increase in response time (RT) in item recognition as a function of memory set size may be attributed either to increased memory search, as in Sternberg’s serial-comparison model, or to increased interference and competition for a limited processing capacity, as in a parallel-dependent model. An additional memory load was imposed on the normal item recognition task. If the normal task involved letters, the additional task involved digits, or vice versa. The added set was presented before and tested after the normal core set was presented and tested. Across the four trial blocks, the subjects did come to dissociate the two memory sets, but this could be due as much to directed rehearsal as to directed search when other results, including the subjects’ postsession reports, are considered. Other findings, such as the higher error rate and shorter RT for positive than negative trials, seem to reflect differences in effective trace strength, and thus are consistent with the parallel-dependent model.
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This study was supported by NIH Grant HD-04869.
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Krueger, L.E. The effect of an extraneous added memory set on item recognition: A test of parallel-dependent vs. serial-comparison models. Memory & Cognition 3, 485–495 (1975). https://doi.org/10.3758/BF03197519
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DOI: https://doi.org/10.3758/BF03197519