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Related Experiment Videos

On wooden pillows: multiple classification and children's category-based inductions.

C W Kalish1, S A Gelman

  • 1University of Michigan, Ann Arbor 48109.

Child Development
|December 1, 1992
PubMed
Summary

Preschoolers can distinguish between material and object categories to make predictions about properties. This indicates children

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Area of Science:

  • Cognitive Development
  • Developmental Psychology
  • Category-Based Induction

Background:

  • Preschoolers previously thought to lack distinction between generalizable and non-generalizable properties.
  • General cognitive constraints were proposed to explain these limitations.

Purpose of the Study:

  • To investigate preschoolers' understanding of category-specific generalization.
  • To challenge the notion of general cognitive constraints in early childhood.

Main Methods:

  • Three studies examined preschoolers' inductive reasoning based on material vs. object categories.
  • Tasks involved predicting properties like texture, fragility, dispositional, and functional attributes.

Main Results:

  • Children consistently used material categories for texture/fragility predictions.
  • They differentiated category types for generalizing unfamiliar dispositional and functional properties.
  • Sensitivity to category type was observed even in younger 3-year-olds.

Conclusions:

  • By age 3, children utilize distinct categorization modes for different phenomena.
  • Results refute general limitations on category-based induction in preschoolers.
  • Domain organization aids children in selecting relevant categories, fostering theory development.

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