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On the efficacy of credibility intervals as indicators of moderator effects in meta‐analytic research
Author(s) -
Koslowsky Meni,
Sagie Abraham
Publication year - 1993
Publication title -
journal of organizational behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.938
H-Index - 177
eISSN - 1099-1379
pISSN - 0894-3796
DOI - 10.1002/job.4030140708
Subject(s) - moderation , credibility , meta analysis , rule of thumb , homogeneity (statistics) , statistics , econometrics , psychology , monte carlo method , type i and type ii errors , confidence interval , mathematics , medicine , algorithm , political science , law
Researchers have suggested the use of credibility intervals for identifying moderator effects in meta‐analysis. In the present study, the accuracy of decisions derived from credibility intervals was determined from Monte Carlo generated correlations based on two series of meta‐analyses, one containing 20 studies and the other, 100 studies. Within each study, the responses of 100 subjects were simulated. Although in some marginal cases the accuracy measures (Type I error rate and power) from the credibility intervals were better than those derived from the SH‐75 per cent and U rules, the former technique was generally found to be a poor indicator of heterogeneity or homogeneity. Finally, the concept of a large interval was discussed and a rule of thumb for using it to detect moderators was suggested.