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Pubmed for Handhelds

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  • Title: Typicality effects in artificial categories: is there a hemisphere difference?
    Author: Richards LG, Chiarello C.
    Journal: Brain Lang; 1990 Jul; 39(1):90-106. PubMed ID: 2207623.
    Abstract:
    In category classification tasks, typicality effects are usually found: accuracy and reaction time depend upon distance from a prototype. In this study, subjects learned either verbal or nonverbal dot pattern categories, followed by a lateralized classification task. Comparable typicality effects were found in both reaction time and accuracy across visual fields for both verbal and nonverbal categories. Both hemispheres appeared to use a similarity-to-prototype matching strategy in classification. This indicates that merely having a verbal label does not differentiate classification in the two hemispheres.
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