Presents a framework to describe typical constraints that program evaluators face. The framework encompasses the usual evaluation costs and other factors that impede data collection or the implementation of strong evaluation designs. These are characterized as internal/substantive or external/political. (SLD)

Many evaluation researchers are now attempting to synthesize quantitative and qualitative approaches. Although such efforts appear to carry great promise, some subtleties and incompatibilities of these approaches are perhaps being overlooked. Implications for social inquiry are discussed. (Author/GDC)

The rationale for a multistage approach to evaluating services demonstration programs is discussed. The approach takes into account limitations that are often found in such programs. The National Evaluation of Models for Linking Drug Abuse Treatment and Primary Care provides an example. (SLD)

A between method triangulation strategy was used to evaluate a process for long-range program planning. One study team conducted interviews and the other used a mail questionnaire. The resulting problems in coordination between teams are discussed. (Author/GDC)