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Sex differences in dichaptic processing

G D Dawson

    Perceptual and Motor Skills
    |December 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Males show enhanced tactuospatial skills with their left hand, suggesting greater right-hemisphere specialization for spatial processing in males compared to females. This sex difference in spatial ability was observed across different age groups.

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    Area of Science:

    • Neuroscience
    • Cognitive Psychology
    • Developmental Psychology

    Background:

    • Inconsistent findings regarding sex differences in tactuospatial processing exist.
    • Previous research often failed to control for confounding variables like handedness and verbal ability.
    • Cerebral asymmetries are known to influence spatial processing.

    Purpose of the Study:

    • To investigate sex differences in tactuospatial functioning.
    • To control for key variables that may influence spatial processing.
    • To examine the hypothesis of greater right-hemisphere specialization for spatial processing in males.

    Main Methods:

    • A dichaptic task was employed to minimize response bias.
    • Participants included 20 males and 20 females across Grades 1, 6, and undergraduate levels.

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  • Controlled variables included handedness, familial sinistrality, verbal ability, and visuospatial performance.

    • Main Results:

    • Males demonstrated superior tactuospatial accuracy with their left hand compared to females across all grade levels.
    • No significant sex differences were found in right-hand tactuospatial performance.
    • Older males exhibited higher overall tactuospatial accuracy than older females.

    Conclusions:

    • Controlled conditions revealed a significant sex difference in tactuospatial functioning.
    • Results support the hypothesis of enhanced right-hemisphere specialization for spatial processing in males.
    • These findings contribute to understanding the neural basis of sex differences in spatial abilities.