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Hemispheric specialization for tactile-spatial processing in preschool children

C Etaugh, R B Levy

    Perceptual and Motor Skills
    |October 1, 1981
    PubMed
    Summary
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    This study found that both young boys and girls exhibit right-hemisphere specialization for tactile-spatial processing. Contrary to previous research, no significant sex differences were observed in this cognitive function at ages 4 and 5.

    Area of Science:

    • Neuroscience
    • Developmental Psychology
    • Cognitive Science

    Background:

    • Previous research suggested sex-based differences in hemispheric specialization for tactile-spatial processing emerging by age 6.
    • Early childhood development of brain lateralization is crucial for cognitive function.

    Purpose of the Study:

    • To investigate right-hemisphere specialization for tactile-spatial processing in 4- and 5-year-old children.
    • To determine if sex differences in this specialization exist at this early age.

    Main Methods:

    • Utilized Witelson's tactile-spatial processing task.
    • Assessed 46 typically developing children (boys and girls) aged 4-5 years.

    Main Results:

    • Both male and female participants demonstrated right-hemisphere specialization for tactile-spatial tasks.

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  • No statistically significant sex differences were found in the degree of specialization or overall performance.

    • Conclusions:

    • Right-hemisphere specialization for tactile-spatial processing is present in both sexes by age 4-5.
    • Early childhood development of brain lateralization for spatial tasks may not show sex differences.
    • Findings challenge earlier research suggesting later emergence of this specialization in girls.