Defines meta-analysis as statistical procedures for combining results from previous separate studies. Discusses four charges promoted by some skeptics as it relates to this statistical procedure. States that many of the trends making a place for meta-analysis are disturbing. (RT)

Methods for meta-analysis have evolved dramatically since Gene Glass first proposed the term in 1976. Since that time statistical and nonstatistical aspects of methodology for meta-analysis have been developing at a steady pace. This guide is an attempt to provide a practical introduction to rigorous procedures in the meta-analysis of social…

Reviews the results of a meta-analysis that evaluated 208 variables derived from 98 studies incorporating music as a contingency for education and therapeutic objectives. Demonstrates that contingent music was more effective than was continuous music and nonmusic stimuli used in these studies. Includes a list of the studies analyzed. (MJP)