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Experience is Instrumental in Tuning a Link Between Language and Cognition: Evidence from 6- to 7- Month-Old Infants' Object Categorization
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On domain differences in categorization and context variety.

Steven Verheyen1, Daniel Heussen, Gert Storms

  • 1Department of Psychology, University of Leuven, Tiensestraat 102, Box 3721, BE-3000, Leuven, Belgium. steven.verheyen@psy.kuleuven.be

Memory & Cognition
|May 4, 2011
PubMed
Summary
This summary is machine-generated.

Context variety does not explain why natural categories are all-or-none and artifact categories are graded. This study found no link between context variety and categorization, refuting the context variety account.

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Area of Science:

  • Cognitive Psychology
  • Linguistics
  • Philosophy of Mind

Background:

  • Categorization research typically distinguishes between natural and artifact categories.
  • Natural categories often exhibit all-or-none membership, while artifact categories show graded membership.
  • Existing theories attribute this difference to representational variations.

Purpose of the Study:

  • To investigate the context variety account as an alternative explanation for domain differences in categorization.
  • To test whether the variety of contexts an item appears in influences its gradedness.
  • To determine if context variety can account for the gradedness difference between natural and artifact categories.

Main Methods:

  • Reviewing prior research on context variety across natural and artifact domains.
  • Conducting two experiments to establish domain differences in context variety.
  • Designing a third experiment with reversed context variety to test the account.

Main Results:

  • Two experiments confirmed that artifactual items appear in a greater variety of contexts than natural items.
  • However, this established context variety difference did not explain the observed categorization differences.
  • A third experiment, manipulating context variety, also failed to support the context variety account.

Conclusions:

  • The context variety of items does not appear to influence categorization gradedness.
  • The context variety account is not a viable alternative to representational difference theories.
  • The domain difference in categorization remains robust and unexplained by context variety.