Evaluating program effects: Conceptualizing and demonstrating a typology

Outcome evaluation is very important for program evaluation and has been becoming increasingly so in the age of accountability. Typically, outcome evaluation is conducted for a single program from a single perspective. However, in a real-life situation, many programs exist in a system, and the effects could be viewed from various perspectives. The authors illustrate a typology of program effects in a system. It moves from the paradigm of a single program's single effect to that of a set of programs' multiple effects. Methodological implications are discussed.