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Performance difference between hands in children on the motor accuracy test-revised.

S M Smith

    The American Journal of Occupational Therapy : Official Publication of the American Occupational Therapy Association
    |February 1, 1983
    PubMed
    Summary
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    Children aged 4-9 show a typical difference of 2-11 points in hand skill, with left-handed children performing similarly to right-handed peers. This suggests right-handed norms are suitable for assessing left-handed skill development.

    Area of Science:

    • Developmental Psychology
    • Motor Skill Development
    • Neuroscience

    Background:

    • Hand skill development is crucial for children's cognitive and physical growth.
    • Understanding handedness differences informs educational and therapeutic interventions.
    • The Motor Accuracy Test-Revised (MAC-R) is a standard tool for assessing fine motor skills.

    Purpose of the Study:

    • To investigate developmental trends in the difference between right-hand and left-hand skill development in children aged 4-9.
    • To establish normative data for hand skill differences using the MAC-R.
    • To determine if sex or handedness influences skill discrepancies.

    Main Methods:

    • A cohort of 188 children (120 right-handers, 68 left-handers) aged 4-9 participated.

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  • The Motor Accuracy Test-Revised (MAC-R) was administered to assess skill in both preferred and non-preferred hands.
  • Difference scores (preferred minus non-preferred hand) and adjusted scores were analyzed by age, sex, and handedness.

    • Main Results:

    • The mean difference between hands across all children was 6.7 points (SD=4.8), suggesting a normative range of 2-11 points.
    • Left-handed children's performance was comparable to right-handed children.
    • No significant differences were found based on sex or handedness in skill difference scores.

    Conclusions:

    • The study establishes a normative range for hand skill differences in children aged 4-9.
    • Findings support the use of existing right-handed norms for assessing left-handed children's motor accuracy.
    • Developmental trends in hand skill differences are consistent across sexes and handedness in this age group.