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Interrater Reliability (Cohen's κ and ICC)

Interrater reliability quantifies the degree to which two or more independent raters produce consistent scores when evaluating the same individuals or products. The family encompasses Cohen's kappa, introduced in 1960 for categorical judgments, and the Intraclass Correlation Coefficient (ICC) for continuous ratings, together spanning most measurement scenarios encountered in behavioral, health, and educational research.

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Sources

  1. Cohen, J. (1960). A Coefficient of Agreement for Nominal Scales. Educational and Psychological Measurement, 20(1), 37–46. DOI: 10.1177/001316446002000104
  2. Koo, T.K. & Li, M.Y. (2016). A Guideline of Selecting and Reporting Intraclass Correlation Coefficients for Reliability Research. Journal of Chiropractic Medicine, 15(2), 155–163. DOI: 10.1016/j.jcm.2016.02.012

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ScholarGateInterrater Reliability (Interrater Reliability (Cohen's κ and ICC)). Retrieved 2026-06-04 from https://scholargate.app/en/psychometrics/interrater-reliability