Abstract
The concept of test reliability is examined in terms of general, group, and specific factors among the items, and the stability of scores in these factors from trial to trial. Four essentially different definitions of reliability are distinguished, which may be called the hypothetical self-correlation, the coefficient of equivalence, the coefficient of stability, and the coefficient of stability and equivalence. The possibility of estimating each of these coefficients is discussed. The coefficients are not interchangeable and have different values in corrections for attentuation, standard errors of measurement, and other practical applications.
Keywords
Equivalence (formal languages)MathematicsReliability (semiconductor)StatisticsStability (learning theory)Standard errorCorrelation coefficientPsychometricsApplied mathematicsComputer scienceDiscrete mathematics
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Publication Info
- Year
- 1947
- Type
- article
- Volume
- 12
- Issue
- 1
- Pages
- 1-16
- Citations
- 441
- Access
- Closed
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Cite This
Lee J. Cronbach
(1947).
Test “Reliability”: Its Meaning and Determination.
Psychometrika
, 12
(1)
, 1-16.
https://doi.org/10.1007/bf02289289
Identifiers
- DOI
- 10.1007/bf02289289