A new, comprehensive framework for programme evaluation designed to bridge the gap between the method- and theory-oriented perspectives, is presented in this book, newly available in paper. Chen provides an intensive discussion of the nature and functions of programme theory, approaches to constructing programme theories, and the integration of programme theory with evaluation processes. Specific types of theory-driven evaluations, as well as principles and guidelines for application, are developed for meeting different policy purposes. Application of systematic strategies is illustrated by concrete examples from a variety of evaluation studies in different fields.