Evaluation Research: Possibilities and Limitations

Abstract

Evaluation research offers several benefits: scientific formulation of a policy problem, measurement of key variables, and-a signal whether important social changes are occurring. Evaluation of social programs seems to answer two kinds of questions well: (a) does it matter if we choose one program over another? and (b) can we alter the number of people in a given social category? The limitations of evaluation lie in the minimal effects of most programs and in the reactive nature of both the program and the evaluation. A theory of evaluation research that indicates the possible types and amounts of impact created by various kinds of social programs, as well as the differences between long-term and short-term effects, is needed, argues the author.