An analysis of how misapplication of criterion validity procedures involving mono rather than multiple operationalization of criterion measures has resulted in underappreciation of self-report research methods is provided. Further research on the validity of behavioral and self-report indices is recommended. (Author/AL)

Evaluators usually have preconceptions about how decisions are made in social programs and how evaluation results will be used. This article demonstrates how an evaluator's choice of a decision-making model has significant impact on the conduct and fate of the research. (Author/CM)

The choice between experimental research or process-oriented oriented research as the only valid paradigm of evaluation research is rejected. It is argued that there is a middle ground. Suggestions are made for mixing the two approaches to suit particular research settings. (Author/GK)

A solution to the problem of specification error due to excluded variables in statistical models of treatment effects in nonrandomized (nonequivalent) control group designs is presented. It involves longitudinal observation with at least two pretests. A maximum likelihood estimation program such as LISREL may provide reasonable estimates of…