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Journal of Experimental…1
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Harwell, Michael2
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An Investigation of the Raudenbush (1988) Test for Studying Variance Heterogeneity.
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Harwell, Michael – Journal of Experimental Education, 1997
The meta-analytic method proposed by S. W. Raudenbush (1988) for studying variance heterogeneity was studied. Results of a Monte Carlo study indicate that the Type I error rate of the test is sensitive to even modestly platykurtic score distributions and to the ratio of study sample size to the number of studies. (SLD)
Descriptors: Meta Analysis, Monte Carlo Methods, Research Reports, Sample Size
An Empirical Study of the Hedges (1982) Homogeneity Test.
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Harwell, Michael – 1995
The test of homogeneity developed by L. V. Hedges (1982) for the fixed effects model is frequently used in quantitative meta-analyses to test whether effect sizes are equal. Despite its widespread use, evidence of the behavior of this test for the less-than-ideal case of small study sample sizes paired with large numbers of studies is…
Descriptors: Effect Size, Meta Analysis, Monte Carlo Methods, Power (Statistics)