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Lateralization01:28

Lateralization

Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
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Stress Prevention and Stress Management Techniques II01:23

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Related Experiment Video

Updated: May 18, 2026

Block Building Task Identifies Distinct Groups of Left/Right-hand Choice Patterns After Unilateral Peripheral Nerve Injury
07:06

Block Building Task Identifies Distinct Groups of Left/Right-hand Choice Patterns After Unilateral Peripheral Nerve Injury

Published on: March 21, 2025

Are left-handers really more anxious?

Lynn Wright1, Scott M Hardie

  • 1Evolutionary and Biological Approaches to Behaviour Research Group, University of Abertay, Dundee, UK. l.wright@abertay.ac.uk

Laterality
|September 15, 2012
PubMed
Summary
This summary is machine-generated.

Left-handers exhibit higher state anxiety in experimental settings, suggesting a link between handedness and emotional reactivity. This finding supports theories on the right hemisphere

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Published on: September 8, 2015

Area of Science:

  • Psychology
  • Neuroscience
  • Human Behavior

Background:

  • Previous research on anxiety and handedness has yielded inconsistent results.
  • Methodological limitations in prior studies may explain discrepancies.
  • Handedness-related reactivity differences suggest state anxiety requires contextual measurement.

Purpose of the Study:

  • To investigate state and trait anxiety levels in left-handed and right-handed individuals within an experimental context.
  • To explore the relationship between handedness, trait anxiety, and state anxiety responses.
  • To test predictions derived from the revised reinforcement sensitivity theory (rRST).

Main Methods:

  • An experimental design was employed to measure state and trait anxiety.
  • Analysis of covariance (ANCOVA) was used to control for trait anxiety's influence on state anxiety.
  • Participants' handedness was assessed in relation to their anxiety scores.

Main Results:

  • Left-handers demonstrated significantly higher state anxiety scores compared to right-handers.
  • No significant differences were found in trait anxiety levels between handedness groups.
  • A significant positive correlation was observed between trait and state anxiety.
  • Even after controlling for trait anxiety, left-handers exhibited a larger state anxiety response.

Conclusions:

  • In experimental settings, state anxiety is directly correlated with trait anxiety.
  • Left-handers show heightened reactivity, influencing their state anxiety response in novel situations.
  • Findings support the role of the right hemisphere in negative affect and the behavioral inhibition system.