Research synthesis of evaluation findings is a multistep process. An investigator identifies a research question, acquires the relevant literature, codes findings from that literature, and analyzes the coded data to estimate the average treatment effect and its distribution in a population of interest. The process of estimating the average…

Used findings from the evaluations of California's Greater Avenues for Independence program and the National Evaluation of Welfare-to-Work Strategies to illustrate why it is important to question the legitimacy of such syntheses. Results show how tempting generalizations are not justified. (SLD)