Another Look at the Power of Meta-Analysis in the Solomon Four-Group Design

Abstract

Braver and Braver (1988) promoted a meta-analysis technique as the most powerful single test for analyzing data from a Solomon Four-Group Design. Customary analysis on fabricated data was not significant, but the meta-analysis yielded significance. The current paper counters that fabricated data sets can easily be constructed to show that customary tests can yield significance, whereas the meta-analysis does not. Statements about the efficacy and power of meta-analysis should be made more cautiously.