Integrative and metric properties of abstracted information as a function of category discriminability, instance variability, and experience

David Goldman, Donald Homa

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

Investigated the abstraction of prototypical information as a function of instance variability, category discriminability, and category size. Following 3 study-sort trials involving schematic face stimuli, 72 undergraduates were asked to classify old, new, and prototypical stimuli both immediately and after 1 wk. In addition, Ss were asked to indicate their preference between a feature prototype (containing the modal feature values) and an average prototype (containing the average feature values) for each of these conditions. Results are consonant with previous studies showing the facilitative influence of category size on abstraction. Analyses revealed that Ss were more likely to count features than to average them, except when variability was low and discriminability was difficult. Both classification performance and reaction time were best predicted by the city-block distance of an exemplar to the feature prototype. Evidence suggests that more dimensions were utilized during abstraction when category discriminability was made more difficult. (PsycINFO Database Record (c) 2006 APA, all rights reserved).

Original languageEnglish (US)
Pages (from-to)375-385
Number of pages11
JournalJournal of Experimental Psychology: Human Learning and Memory
Volume3
Issue number4
DOIs
StatePublished - Jul 1 1977

Keywords

  • category discriminability &
  • experience, integrative &
  • instance variability &
  • metric properties of abstracted information, college students

ASJC Scopus subject areas

  • Medicine(all)

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