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Hemispheric laterality and self-rated personality traits.

W D Killgore¹, L DellaPietra, D J Casasanto

¹Harvard Medical School, Brain Imaging Center, McLean Hospital, Belmont, MA 02478, USA. killgore@genesis.mclean.org

Perceptual and Motor Skills

|February 9, 2000

Summary

Cerebral hemispheric lateralization, the brain

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Area of Science:

Neuroscience
Psychology

Background:

Cerebral hemispheric lateralization is a fundamental concept in neuroscience.
Understanding the relationship between brain lateralization and personality is crucial.

Purpose of the Study:

To investigate the association between cerebral hemispheric lateralization and personality traits.
To determine if handedness, eyedness, or earedness correlates with specific personality characteristics.

Main Methods:

Evaluated 154 undergraduate and nonclinical volunteers.
Assessed personality traits and determined hand, eye, and ear preference.

Main Results:

No significant differences in personality ratings were found between groups based on hand, eye, or ear preference.
Cerebral lateralization, as indicated by sensory/motor preferences, did not predict personality variations in this cohort.

Conclusions:

This study found no significant link between cerebral hemispheric lateralization (based on preference) and personality traits in the studied population.
Further research may be needed to explore more nuanced measures of lateralization and their potential influence on personality.

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