This article summarizes research on the effect of testing on student achievement as found in English-language sources, comprising several hundred studies conducted between 1910 and 2010. Among quantitative studies, mean effect sizes range from a moderate d [image omitted] 0.55 to a fairly large d [image omitted] 0.88, depending on the way effects…

As the classroom and workplace, among other contexts, become more diverse in their population characteristics, the need to be aware of specific factors impacting testing outcome issues correspondingly increases. The focus in this study, among other purposes, was to identify possible interactions between examinee's individual-difference…