Premised on the idea that evaluators should be familiar with a range of approaches to program modifications, I review several existing approaches and then describe another, less well-recognized option. In this newer option, evaluators work with others to identify potentially needed adaptations for select program aspects "in advance." In…

George Grob presented the fifth and final Eleanor Chelimsky Forum address at the 2017 annual meeting of the Eastern Evaluation Research Society. In this commentary, I respond to several points that George raises in the "American Journal of Evaluation" paper based on that address. An overarching theme of my comments involves the potential…

Evaluation theories can be tested in various ways. One approach, the experimental analogue study, is described and illustrated in this article. The approach is presented as a method worthy to use in the pursuit of what Alkin and others have called descriptive evaluation theory. Drawing on analogue studies conducted by the first author, we…

Builds on C. Christie's innovative work to chart a future course for research on evaluation. Describes a variety of forms that a more evidence-based approach to evaluation theory could take and offers suggestions to help increase the amount and impact of evidence in evaluation theory. (SLD)