Category specific naming the visual properties of line drawn stimuli

T.M. Gale, K.R. Laws

    Research output: Contribution to journalArticlepeer-review

    49 Citations (Scopus)
    93 Downloads (Pure)

    Abstract

    It has been argued that greater intra-category structural similarity for living things may make them more difficult to recognize and name (e.g. Humphreys et al., 1988). Nevertheless, the precise meaning and quantification of ‘structural similarity’ remain unclear. We developed three new visual measures derived from the Snodgrass and Vanderwart (1980) corpus and examined their relationship with picture naming in a speeded presentation paradigm. The three measures were: the proportion of black pixels (PB); the degree of pixel overlap within subcategories using Euclidean Overlap (EO); and the degree of consistency in inter-pixel distribution across each picture (IPC). Within-category EO was greater for nonliving than living things, indicating less within-category visual overlap for living things. Finally, EO correlated significantly with error rates (PB and IPC did not). These findings contradict existing notions that line drawings of living things have greater visual similarity than nonliving things.
    Original languageEnglish
    Pages (from-to)7-21
    JournalCortex
    Volume38
    Issue number1
    Publication statusPublished - 2002

    Keywords

    • Computer Science
    • Semantic memory
    • Category specificity
    • Snodgrass and Vanderwart

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