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Related Experiment Videos

Unimanual performance across the age span.

P J Bryden1, E A Roy

  • 1Department of Kinesiology and Physical Education, Wilfrid Laurier University, Waterloo, Ont., N2L 3C5, Canada. pbryden@wlu.ca

Brain and Cognition
|January 5, 2005
PubMed
Summary
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This study explored how hand performance changes with age using the Annett pegboard. Adults showed less difference between their right and left hand speeds compared to younger groups, suggesting developmental shifts in manual asymmetry.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Human Motor Control

Background:

  • Hand preference and manual asymmetry are key aspects of human motor development.
  • Understanding age-related changes in bimanual performance is crucial for developmental studies.

Purpose of the Study:

  • To investigate age-related performance differences between the two hands on the Annett pegboard.
  • To examine the development of manual asymmetry in right-handed individuals across different age groups.

Main Methods:

  • Participants: 302 right-handed individuals across five age groups (3-5, 6-7, 8-9, 10-12, 19-24 years).
  • Tools: Annett pegboard and Waterloo Handedness Questionnaire.
  • Analysis: Compared performance differences between hands and across age groups.

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Main Results:

  • Significant overall performance difference: the right hand was faster than the left hand.
  • Age-related performance differences: the adult group exhibited a smaller performance gap between hands compared to younger age groups.
  • Manual asymmetry development: findings indicate significant changes in the difference between hand performances as a function of age.

Conclusions:

  • The development of manual asymmetry is influenced by age, with adults showing reduced hand performance differences.
  • Results provide insights into theories explaining the development of hand preference and manual asymmetry.
  • Further research can explore the neurodevelopmental basis of these observed age-related changes in bimanual coordination.