The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) was utilized for the reporting of the research literature in "The Journal for Specialists in Group Work" (JSGW) since a 1997 special issue focused on contemporary issues in the research of group work was published. The focus of this review was to explore the scope of specific research methods and the contribution to the understanding, practice, and study of group work over the course of the last 20 years. Implications for continued evolution and areas of future research are provided.