Powerpoint slides describe results of GAO analysis of types of interventions for which randomized experiments are or are not well-suited for assessing effectiveness and types of alternative methods for estimating program impact. Document provides electronic reference to published GAO report with full results.#QuantitativeMethods-TheoryandDesign #EvaluationPolicy #GovernmentEvaluation #effectiveness #2010Conference #randomized #ResearchonEvaluation #experiments