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Related Experiment Videos

Methodological implications of interaural correlation: count heads not ears.

S Coren1, A R Hakstian

  • 1Department of Psychology, University of British Columbia, Vancouver, Canada.

Perception & Psychophysics
|September 1, 1990
PubMed
Summary
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High correlation between ears invalidates ear-based data analysis in hearing studies. Aggregating audiograms by ear inflates statistical significance, potentially leading to incorrect conclusions in audiology research.

Area of Science:

  • Audiology
  • Biostatistics

Background:

  • Pure-tone hearing thresholds are crucial for audiological assessment.
  • Interaural correlation of hearing data is a key consideration in research design.

Purpose of the Study:

  • To investigate the correlation of pure-tone hearing thresholds between ears.
  • To evaluate the validity of ear-based data aggregation in audiology research.

Main Methods:

  • Analysis of pure-tone hearing thresholds from 425 subjects.
  • Calculation of interaural correlation coefficients, with and without controlling for age.

Main Results:

  • A high average correlation of .885 was found between right and left ear thresholds.
  • Even with age partialed out, the correlation remained high at .783.

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  • This high correlation invalidates the practice of entering data based on individual ears.

    • Conclusions:

    • The high interaural correlation of hearing thresholds challenges standard data aggregation methods in audiology.
    • Using individual ears as independent data points inflates statistical significance, compromising research integrity.