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Age changes in assembly performance: a component analysis.

K J Lindner1

  • 1University of Manitoba, Faculty of Physical Education and Recreation Studies, Winnipeg, Canada.

Perceptual and Motor Skills
|December 1, 1988
PubMed
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Manual dexterity in children aged 5-15 improves with age, with grasping skills declining in older children. Reaching and positioning skills consistently improve throughout childhood development.

Area of Science:

  • Developmental Psychology
  • Motor Skill Acquisition
  • Human Kinetics

Background:

  • Manual dexterity is crucial for daily activities and academic tasks.
  • Understanding the developmental trajectory of fine motor skills is essential for educational and therapeutic interventions.
  • Previous research has identified various components of manual dexterity, but their age-related changes require further investigation.

Purpose of the Study:

  • To analyze the developmental changes in specific components of one-handed manual dexterity in children.
  • To identify which components of manual dexterity improve or deteriorate with age from Kindergarten to Grade 9.
  • To investigate potential sex differences in the development of manual dexterity components.

Main Methods:

  • One hundred children aged 5 to 15 years (Kindergarten to Grade 9) performed a one-handed manual dexterity assembly task.

Related Experiment Videos

  • Videotaped performances were analyzed to quantify five components: Grasping, Transporting, Positioning, Reaching, and Pauses.
  • Statistical analysis was used to determine the significance of age-related changes and sex differences in each component.

    • Main Results:

    • All five components (Grasping, Transporting, Positioning, Reaching, Pauses) significantly contributed to performance improvements in younger children (lower grades).
    • Grasping skills showed a significant deterioration in older children (higher grades).
    • Reaching and Positioning skills demonstrated continuous improvement up to Grade 9. No significant sex differences were observed in any component.

    Conclusions:

    • Manual dexterity development is multifaceted, with different components exhibiting distinct age-related trajectories.
    • While overall dexterity improves in early childhood, specific skills like grasping may decline in later childhood or early adolescence.
    • The findings suggest that interventions targeting manual dexterity should consider the specific developmental stage and component-specific changes.