As reporting of effect sizes in evaluation studies has proliferated, researchers and consumers of research need tools for interpreting or benchmarking the magnitude of those effect sizes that are relevant to the intervention, target population, and outcome measure being considered. Similarly, researchers planning education studies with social and…

The random variable p and its functions figure in several "tests of combined significance," meta-analysis summaries based on sample significance values, and ps have been used singly, as well as in other tests for evaluating the outcomes of individual research studies. In this work, asymptotic distributions of the sample one-sided…

A meta-analysis of findings from 24 controlled evaluations showed computer-assisted instruction (CAI) usually has positive effects on adult learners, i.e., it raised examination scores and reduced instruction time. Reliable conclusions could not be reached on CAI's long-term cognitive effects because of small number of studies investigating such…