The debate on Evidence-Based Policy Making deals with the role of evaluation, and of social sciences, in influencing the design of public programs. The reflection of many scholars mostly involves methodological issues and the preference for RCT designs is quite often the result. Indeed, the author sustains a wider pluralism in the use of methods in evaluation, considering the different meanings that the term ‘evidence’ could have if we consider both the complexity of policies and the needs of policy makers. Moreover, the author suggests strategies to improve the relevance of the evaluators role in the policy making.
Keywords: Evidence-Based Policy Making; Ontologies; Methods