What a realistic training program should require, given a broad scope of research methodology, is discussed. Considering the core of evaluation research training, the diversity of methodologies raises issues about what is to be taught and how the involvement of students in actual projects is discussed. (Author/GK)

Considered fundamentally a scientific enterprise, evaluation research also requires artistic skills. The latter are essential to in-house evaluators, more so than to extrainstitutional evaluators. A training model is suggested. (Author/GK)

This special issue deals with the preparation of professional evaluators. Evaluation is considered as a profession that warrants specialized training. Aspects of necessary training and descriptions of current programs are discussed. (SLD)

Program theory and implementation process theory contribute, respectively, to specifying the what and the why of program delivery. This article discusses the relationship between these two theories and the types of data collection methods that can be derived from each in order to contribute to more comprehensive evaluation designs. (JAZ)

Program theory can be used to improve programs and policies. This article describes a set of techniques for complicating and simplifying program theory, referred to as conceptual and action heuristics. Methods such as analyzing metaphors, clarifying concepts, mapping, component assessment, causal modeling, and decision analysis are discussed. (JAZ)

Seven chapters present 31 propositions challenging traditional ideas about the nature and practice of program evaluation. Methods to improve evaluation models and approaches and ways to address intermediate and advanced evaluation issues are explored. The discussion also serves as an introduction to the most analytical and comprehensive of the…