Fifty-three research studies on feedback timing and verbal learning underwent meta-analysis. Applied studies using actual classroom quizzes and real learning materials found immediate rather than delayed feedback to be more effective; experimental studies of acquisition of test content indicate the opposite. Laboratory studies of list learning…

An overview of meta-analysis in education is provided. Methodology is discussed and substantive findings from meta-analytic studies are reviewed for six major areas of educational research: (1) instructional systems; (2) instructional design; (3) curricular innovation; (4) teacher education and evaluation; (5) class and school organization; and…

A meta-analysis of findings from 108 controlled evaluations showed that mastery learning programs have positive effects on the examination performance of students in colleges, high schools, and the upper grades in elementary schools. Effects of mastery programs on student attitudes, instructional time, and college completion rates are discussed.…