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Related Concept Videos

Language Development01:22

Language Development

Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
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Portable Intermodal Preferential Looking (IPL): Investigating Language Comprehension in Typically Developing Toddlers and Young Children with Autism
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Subitizing and counting in typical and atypical development.

Patrick Schleifer1, Karin Landerl

  • 1Department of Psychology, University of Tuebingen, Tuebingen, Germany.

Developmental Science
|January 5, 2012
PubMed
Summary
This summary is machine-generated.

This study reveals distinct enumeration processes for subitizing and counting. Dyscalculic children show a dysfunctional subitizing mechanism, impacting early number skills.

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Area of Science:

  • Cognitive Psychology
  • Developmental Psychology
  • Neuroscience

Background:

  • Enumeration is a fundamental numerical skill.
  • Subitizing (small quantities) and counting (larger quantities) are proposed as distinct processes.
  • Arithmetic difficulties can arise from underlying enumeration deficits.

Purpose of the Study:

  • To investigate enumeration performance across different age groups.
  • To compare typically developing individuals with those exhibiting poor arithmetic skills (dyscalculia).
  • To identify factors differentially affecting subitizing and counting.

Main Methods:

  • Dot counting tasks were administered to various age groups.
  • Response times and saccadic frequencies were measured.
  • Performance was compared between typically developing children and children with dyscalculia.

Main Results:

  • High correspondence between response times and saccadic frequencies in typically developing groups.
  • Age-related differences were more pronounced in the counting range than subitizing range.
  • Dyscalculic children exhibited a discontinuity between subitizing and counting, with steeper subitizing slopes.

Conclusions:

  • Evidence supports two qualitatively different enumeration processes: subitizing and counting.
  • Dyscalculia may involve a dysfunctional subitizing mechanism.
  • Specific factors differentially influence subitizing and counting, impacting number development.