What research designs and methodological features qualify a study for meta-analysis and which disqualify it? What types of research reports are appropriate for the meta-analysis? What is the cultural and linguistic range of the studies to be included? By integrating and translating the current methodological and statistical work into a practical guide, the authors address these questions to provide readers with a state-of-the-art introduction to the various approaches to doing meta-analysis.

What research designs and methodological features qualify a study for meta-analysis and which disqualify it? What types of research reports are appropriate for the meta-analysis? What is the cultural and linguistic range of the studies to be included? By integrating and translating the current methodological and statistical work into a practical guide, the authors address these questions to provide readers with a state-of-the-art introduction to the various approaches to doing meta-analysis.

All researchers face an important challenge - designing research that will have sufficient sensitivity to detect those effects it purports to investigate. Through careful explanations and selection of examples, this title examines the concept of design sensitivity and explains statistical power and the elements that determine it.

This handbook promotes a comprehensive strategy founded on evidence-based programming for juvenile justice systems to adopt or enhance their current system. The comprehensive strategy is supported strongly by the broad research base that is now available. This strategy recognizes, first, that a relatively small proportion of the juveniles who initially enter the juvenile justice system will prove to be serious, violent, or chronic offenders, but that group accounts for a large proportion of the overall amount of delinquency. An important component of a comprehensive evidence-based juvenile...