-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,...