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Over the past 25 years, meta-analysis has assumed a significant role in the synthesis of counseling and psychotherapy research through the evaluation and interpretation of the results of multiple studies. An examination of four widely recognized rehabilitation counseling journals, however, reveals that only one meta-analysis (Bolton & Akridge, 1995) has been published during the past 10 years. This article examines the meta-analysis process as a viable method to aggregate multiple studies, discusses common advantages and criticisms of meta-analysis, and provides suggestions specific to how meta-analyses may be applied to investigate rehabilitation outcomes. In addition, new applications of meta-analysis that have been discovered and refined in recent years are presented through a reanalysis of the Bolton and Akridge (1995) meta-analysis.
Rosenthal et al. (Sat,) studied this question.
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