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Generalization after intradimensional discrimination training in 2-year-old children.

L T Stoddard1, W J McIlvane

  • 1Department of Behavioral Neurology, E. K. Shriver Center, Waltham, MA 02254.

Journal of Experimental Child Psychology
|April 1, 1989
PubMed
Summary

Two-year-old children learned visual discrimination with training. Further training at closer points improved their ability to distinguish subtle differences, confirming earlier stimulus generalization research.

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Area of Science:

  • Developmental Psychology
  • Cognitive Science
  • Perception

Background:

  • Understanding how children learn to discriminate between visual stimuli is crucial for cognitive development research.
  • Previous studies established principles of stimulus generalization in various populations.

Purpose of the Study:

  • To investigate the effects of intradimensional discrimination training on stimulus control in two-year-old children.
  • To determine if initial training parameters influence subsequent discrimination learning on a continuum.

Main Methods:

  • Two-year-old children underwent intradimensional discrimination training using a circle-ellipse continuum.
  • Training involved initially distant points, followed by training at nearer points on the continuum.

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Main Results:

  • Initial training at distant points did not yield effective stimulus control for smaller differences.
  • Subsequent training at nearer points successfully established stimulus control, indicating no capacity limitation.

Conclusions:

  • Discrimination learning in young children is sensitive to the spacing of training stimuli.
  • Findings support and extend existing theories of stimulus generalization to early human development.