The role of categorical information in processing relational attributes |
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Authors: | Kevin M. Sailor Edward J. Shoben |
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Affiliation: | 1. Department of Psychology, Lehman College, CUNY, 250 Bedford Park Blvd. West, 10468-1589, Bronx, NY 2. University of Illinois at Urbana-Champaign, Urbana, Illinois
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Abstract: | In two experiments, the effect of knowledge about relevant common taxonomic categories on judgments of relative magnitude was investigated. In Experiment 1, subjects judged the relative size of objects that belonged to the categoriesbuilding andanimal. The symbolic distance effect was smaller for between-category pairs (e.g.,horse-cabin) whose members could be classified more quickly into the two categories. This result strongly suggests that subjects used category membership to determine relative size on at least some portion of the trials. In Experiment 2, a similar attenuation of symbolic distance was obtained when subjects judged the relative height of furniture and vehicles. A simple explanation of the reduced symbolic distance effect for between-category pairs is that subjects occasionally fail to categorize the items into different categories and have to compute relative magnitude from the magnitudes of the two items. Fits to the data using the bootstrap technique suggest that more involved assumptions are required. |
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