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1 results

  • Covariate-free and Covariate-dependent Reliability

  • Peter M. Bentler
  • Journal:
    Psychometrika / Volume 81 / Issue 4 / December 2016
    Published online by Cambridge University Press:
    01 January 2025, pp. 907-920

  • Classical test theory reliability coefficients are said to be population specific. Reliability generalization, a meta-analysis method, is the main procedure for evaluating the stability of reliability coefficients across populations. A new approach is developed to evaluate the degree of invariance of reliability coefficients to population characteristics. Factor or common variance of a reliability measure is partitioned into parts that are, and are not, influenced by control variables, resulting in a partition of reliability into a covariate-dependent and a covariate-free part. The approach can be implemented in a single sample and can be applied to a variety of reliability coefficients.