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Related Experiment Videos

Eye colour: an unconsidered variable in cognitive research?

A R Fallone1, B Baluch

  • 1Faculty of Health Care and Social Studies, University of Luton, Bedforshire, England.

Perceptual and Motor Skills
|December 1, 1993
PubMed
Summary

Eye color may influence cognitive processing speed. This study found that individuals with darker eyes reacted faster than those with lighter eyes in a choice reaction time task.

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Area of Science:

  • Cognitive Psychology
  • Human Information Processing

Background:

  • Reaction time data is crucial for developing cognitive models.
  • Standard controlled variables in cognitive studies include age, sex, and education.
  • Eye color is rarely considered a significant variable in cognitive research.

Purpose of the Study:

  • To investigate if eye color influences reaction time.
  • To determine if eye color should be a controlled variable in cognitive psychology experiments.

Main Methods:

  • Utilized the McCarthy and Donchin (1981) reaction time paradigm.
  • Compared reaction times between subjects with different eye colors.

Main Results:

  • Found statistically significant differences in choice reaction time.
  • Subjects with darker eyes exhibited faster reaction times compared to subjects with lighter eyes.

Conclusions:

  • Eye color may play a role in cognitive processing speed.
  • The findings suggest eye color warrants consideration as a controlled variable in cognitive psychology research.

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