Biomedical subjects
Publications and source records attributed to M W Lipsey.
Over the last two decades, theory and practice in the field of program evaluation have generated a rich array of concepts and methods for research on the effectiveness of social programs. This paper attempts to summarize the lessons from program evaluation research that might usefully inform intervention research in occupational health and safety.
Conventional reviews of research on the efficacy of psychological, educational, and behavioral treatments often find considerable variation in outcome among studies and, as a consequence, fail to reach firm conclusions about the overall effectiveness of the interventions in question. In contrast meta-analytic reviews show a strong, dramatic pattern of positive overall effects that cannot readily be explained as artifacts of meta-analytic technique or generalized placebo effects. Moreover, the effects are not so small that they can be dismissed as lacking practical or clinical significance. Although meta-analysis has limitations, there are good reasons to believe that its results are more credible than those of conventional reviews and to conclude that well-developed psychological, educational, and behavioral treatment is generally efficacious.
Describes the application to community issues of the meta-analytic research strategies increasingly used in many field of psychology. First, we highlight the potential value of meta-analysis to community research. Second, we describe six major steps involved in conducting an effective meta-analysis. These steps include formulating the initial research question(s), locating relevant studies, abstracting critical information from each study, and presenting, analyzing, and interpreting the resultant data. In this guide, the major aspects of meta-analysis are discussed with particular emphasis on the procedures that are most critical to the validity of its conclusions. Greater familiarity with the techniques, issues, and potential of meta-analysis may stimulate investigators to make more effective use of this powerful approach to integrating research in community psychology.
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