United States Government Accountability Office Applied Research and Methods DESIGNING EVALUATIONS 2012 Revision Preface GAO assists congressional decision makers in their deliberations by furnishing them with analytical information on issues and options. Many diverse methodologies are needed to develop sound and timely answers to the questions the Congress asks. To provide GAO evaluators with basic information about the more commonly used methodologies, GAO’s policy guidance includes documents such as methodology transfer papers and technical guides. This methodology transfer paper addresses