A Modification of Feldt's Test of the Equality of Two Dependent Alpha Coefficients
- 1 March 1994
- journal article
- Published by Cambridge University Press (CUP) in Psychometrika
- Vol. 59 (1) , 49-57
- https://doi.org/10.1007/bf02294264
Abstract
The available statistical tests of the equality of nonindependent alpha reliability coefficients require that the product of the number of test parts times the number of subjects be quite large—1000 or more. A modification of one of these tests is derived which avoids this limitation. Monte Carlo studies indicate that the modified test effectively controls the Type I error rate with as few as 2 or 3 test parts and 50 subjects. This means the modified test can be safely employed in comparisons between interrater reliabilities.Keywords
This publication has 12 references indexed in Scilit:
- A Comparison of Five Methods for Estimating the Standard Error of Measurement at Specific Score LevelsApplied Psychological Measurement, 1985
- A Test of the Hypothesis that Cronbach's Alpha Reliability Coefficient is the Same for Two Tests Administered to the Same SamplePsychometrika, 1980
- A K-Sample Significance Test for Independent Alpha CoefficientsPsychometrika, 1976
- Approximating Standardized Achievement Test Norms With a Theoretical ModelEducational and Psychological Measurement, 1974
- A Test of the Hypothesis that Cronbach's Alpha or Kuder-Richardson Coefficent Twenty is the Same for Two TestsPsychometrika, 1969
- A Numerical Procedure to Generate a Sample Covariance MatrixJournal of the American Statistical Association, 1966
- The Approximate Sampling Distribution of Kuder-Richardson Reliability Coefficient TwentyPsychometrika, 1965
- The Statistical Theory of Stepped-Up Reliability Coefficients when a Test has been divided into Several Equivalent PartsPsychometrika, 1963
- A Replication of Lord's Study on Skewness and Kurtosis of Observed Test-Score DistributionsEducational and Psychological Measurement, 1959
- A Survey of Observed Test-Score Distributions With Respect to Skewness and Kurtosis1Educational and Psychological Measurement, 1955