In this article, we discuss the methodological implications of data and theory integration for Theory-Based Evaluation (TBE). TBE is a family of approaches to program evaluation that use program theories as instruments to answer questions about whether, how, and why a program works. Some of the groundwork about TBE has expressed the idea that a…

Over 2000 years ago, Aristotle wrote of four distinct causes at play in the world we know. Those causes, the material cause, the formal cause, the efficient cause, and the final cause, were meant to refer to ontological and, by extension, epistemological concerns, and were powerful enough to be seized upon and used in some form by those of very…

Offers a critical commentary on theory-based evaluation, stressing its utility as a method of program planning and as an adjunct to experiments but rejecting it as an alternative to experiments. Cites seven reasons for doubting that theory-based evaluations can provide the valid conclusions about a program's causal effects that proponents have…

Program logic models provide a method of presenting program objectives schematically. This article presents a model that explicitly recognizes the ultimate societal-level benefits and accommodates identification of outputs, performance indicators, and targets. The model is illustrated with a hypothetical agricultural technology transfer program.…

Explores the role of theory in strengthening causal interpretations in nonexperimental research. Evaluators must conduct theory-driven research, concentrating on "small theory," in that the focus is on the explanation of processes specific to the program being evaluated. Theory-guided treatment research must be programmatic and…

Two chapters of this issue consider critical multiplism as a research strategy with links to meta analysis and generalizability theory. The unifying perspective it can provide for quantitative and qualitative evaluation is discussed. The third chapter explores meta analysis as a way to improve causal inferences in nonexperimental data. (SLD)

Statistical approaches to assess how prevention and intervention programs achieve their effects are described and illustrated through the evaluation of a health promotion program to reduce dietary cholesterol and a school-based drug prevention program. Analyses require the measurement of intervening or mediating variables to represent the…

This paper presents a comparison of performance auditing and evaluation. It is the product of a collaboration between the senior evaluator from the Office of Research and Evaluation in the Austin Independent School District (Texas) and the senior auditor of Austin's City Auditor's Office. These officials were required to work together when the…

This report reviews the facts underlying the debate about delinquency in the United States, focusing on evidence of how well various approaches to crime succeed in practice. Do youth programs such as family therapies and recreation initiatives actually make a cost-effective contribution to controlling crime? Research supports a strong foundation…