-This is one of the most coherent and comprehensive theories of evaluation yet formulated and one that makes a most valuable contribution. The authors are pioneering in important new directions.-
--Ernest R. House, author of Professional Evaluation and Evaluating with Validity

-This book is the best I've ever read detailing a practical theory of evaluation. It is comprehensive, beautifully written, and makes sense of the evaluation enterprise. It does so by emphasizing the major function of evaluation as sense-making about policies and programs.-
--Thomas D. Cook,...

Showing readers how to represent the outcomes that result from programmes as well as how to measure and analyze results from changes, this text illustrates major concepts with descriptive cases of actual evaluations.