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Sex differences in spatial ability: a lateralization of function approach.

Stacy L Rilea1, Beverly Roskos-Ewoldsen, David Boles

  • 1Christopher Newport University, Newport News, VA, United States. srilea@cnu.edu

Brain and Cognition
|November 4, 2004
PubMed
Summary

This study explored sex differences in spatial tasks, finding mixed results. Men showed a right-hemisphere advantage on mental rotation, while both sexes favored the right hemisphere for the waterlevel task.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Human Behavior

Background:

  • Sex differences in spatial abilities are well-documented.
  • The role of hemispheric specialization in these differences requires further investigation.
  • Right-hemisphere dominance is often associated with certain spatial tasks.

Purpose of the Study:

  • To investigate if the male advantage in spatial performance correlates with right-hemisphere dependency.
  • To examine sex and hemispheric differences across three distinct spatial tasks.
  • To establish a framework for analyzing sex differences in spatial abilities.

Main Methods:

  • 108 right-handed participants (men and women) completed mental rotation, waterlevel, and paperfolding tasks.
  • Tasks were presented bilaterally to assess hemispheric engagement.

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  • Performance was analyzed for sex-based and hemisphere-specific differences.

    • Main Results:

    • Men exhibited a right-hemisphere advantage on the mental rotation task; women did not show hemispheric differences.
    • Men outperformed women on the waterlevel task, with both sexes showing a right-hemisphere advantage.
    • No significant sex or hemispheric differences were found for the paperfolding task.

    Conclusions:

    • Findings partially support the hypothesis linking male spatial advantage to right-hemisphere dependency.
    • Hemispheric engagement varies across different spatial tasks and sexes.
    • The study highlights the complexity of sex differences in spatial cognition.