Patton has written many books on the art and science of program evaluation, including Utilization-Focused Evaluation (4th ed., 2008), in which he emphasizes the importance of designing evaluations to ensure their usefulness, rather than simply creating long reports that may never get read or never result in any practical changes.

In cases where there is not yet a clear model, or where the environment is too complex and changing too fast for the model of practice ever to be fixed, developmental evaluators can be of great assistance by helping people articulate their hunches and hopes, do "vision-directed reality testing," tracking emergent and changing realities, and "feeding back meaningful findings in real time so that reality testing facilitates and supports the dynamics of innovation."

(p. 7) This type of evaluation is particularly helpful in the context of social innovation, where "goals are emergent and changing rather than predetermined and fixed, time periods are fluid and forward-looking rather than artificially imposed by external deadlines, and the purposes are innovation, change, and learning rather than external accountability (summative evaluation) or getting ready for external accountability (formative evaluation)."

Instead of evaluating a program to determine whether resources are being spent on what they're supposed to be spent on, developmental evaluation helps answer questions like, "Are we walking the talk?

He sits on the Editorial Advisory Board for The Foundation Review.