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Sensory discrimination and intelligence: postmortem or resurrection?

R B Evans1, I J Deary

  • 1University of Edinburgh, Scotland.

The American Journal of Psychology
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

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Early 20th-century studies inaccurately reported no link between intelligence and senses. Re-evaluation reveals these studies were flawed, and others from the same era found significant sensory discrimination and intelligence associations.

Area of Science:

  • Psychology
  • Cognitive Science
  • History of Science

Background:

  • Historical research often cites early 20th-century studies by Galton, Sharp, and Wissler as evidence for a lack of correlation between sensory abilities and intelligence.
  • This narrative has shaped contemporary understanding, suggesting a historical failure to link sensory discrimination with cognitive abilities.

Observation:

  • A critical review of seminal historical studies reveals significant inaccuracies in their reporting and methodological deficiencies.
  • These commonly cited negative studies are often misrepresented, rendering them empirically unreliable for evaluating the intelligence-sensory discrimination link.

Findings:

  • Less frequently cited studies from the same historical period consistently reported modest, significant associations between sensory discrimination and measures of mental ability.

Related Experiment Videos

  • These overlooked positive findings align with contemporary research demonstrating correlations between sensory acuity and intelligence test scores.

    • Implications:

    • The prevailing view that early research failed to connect intelligence and senses is incorrect, based on flawed reporting and selective citation.
    • Revisiting historical data with modern scrutiny necessitates a re-evaluation of the relationship between sensory processing and cognitive function across different eras.