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Test “reliability”: Its meaning and determination

Test “reliability”: Its meaning and determination 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Psychometrika Springer Journals

Test “reliability”: Its meaning and determination

Cronbach, Lee J.
Psychometrika , Volume 12 (1): 16 – Mar 1, 1947
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References (12)

Publisher
Springer Journals
Copyright
1947 Psychometric Society
ISSN
0033-3123
eISSN
1860-0980
DOI
10.1007/BF02289289
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Psychometrika – Springer Journals

Published: Mar 1, 1947

Keywords: Psychometrics; Assessment, Testing and Evaluation; Statistics for Social Sciences, Humanities, Law; Statistical Theory and Methods

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