Designed to provide researchers clear and informative insight into techniques of meta-analysis, the Third Edition of Methods of Meta-Analysis: Correcting Error and Bias in Research Findings is the most comprehensive text on meta-analysis available today. It is the only book that presents a full and usable treatment of the role of study artifacts in distorting study results, as well as methods for correcting results for such biases and errors.
Chapter 10: Cumulation of Findings within Studies
Cumulation of Findings within Studies
It is often possible to obtain more than one correlation or estimate of effect size from within the same study. Should these estimates be included in the meta-analysis as independent estimates? Or should they be combined somehow within the study so that only one value is contributed? There is no single answer to these questions because several different kinds of replications can take place within studies. This chapter surveys the most frequent cases.
Many single studies have replication of observation of a relationship within the study. Thus, there can be cumulation of results within, as well as across, studies. However, the method of cumulation depends on the nature of the replication process used in the study. Three kinds of ...