Theory-based evaluation collects information to answer questions about the theoretical integrity of a program to determine the extent of congruence or discrepancy that exists between how the program is supposed to work (expected theory of action) and how it actually works (observed theory of action). If the program theory is examined as a whole, only one program theory is necessary. If, however, one wants to know about different sub-components of the program theory, such as its development, delivery, cost, or effects domain, a separate sub-theory must be constructed for each program domain being evaluated <link to Theory-Based Evaluation Article>.

Sample question…

• Do you want information about the relationship between means or causes (i.e., program processes or activities) and ends or effects (i.e., program impacts or outcomes)? If the answer to this question is affirmative, you should develop a program theory of action or logic model (See Resources).