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From objects to quantities: developments in preschool children's judgments about aggregate amount.

C Sophian1

  • 1Department of Psychology, University of Hawaii at Manoa, Honolulu 96822, USA. csophian@hawaii.edu

Developmental Psychology
|November 18, 2000
PubMed
Summary

Children

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Area of Science:

  • Cognitive Development
  • Developmental Psychology
  • Quantitative Reasoning

Background:

  • Children's understanding of quantity develops over time.
  • Early quantitative reasoning is influenced by perceptual cues like object size.

Purpose of the Study:

  • To investigate how object boundaries affect children's judgments of aggregate amount.
  • To understand the developmental trajectory of quantitative reasoning in young children.

Main Methods:

  • Children aged 3, 4, and 5 years were presented with choices involving collections of cookies.
  • Choices varied in number, size, and aggregate amount of cookies.

Main Results:

  • Three-year-olds focused on individual cookie size, not aggregate amount.
  • Five-year-olds demonstrated an ability to aggregate size information across multiple cookies.
  • Accurate judgments of aggregate amount were achieved later than sensitivity to individual object size.

Conclusions:

  • The distinction between discrete objects and mathematical quantities is crucial for quantitative development.
  • Children's ability to process aggregate amounts develops significantly between ages 3 and 5.
  • Perceptual salience of object boundaries impacts early quantitative reasoning.

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