Policy Effectiveness through Configurational and Mechanistic Lenses: Lessons for Concept Development

Abstract

The aim of this article is to build up a concept-informed research design to answer “why and how” a policy can make a difference. It demonstrates the potential and challenges of an innovative multimethod approach, which combines a configurational and mechanistic view to policy effectiveness. The article hereto draws on experiences in applying Qualitative Comparative Analysis and Process Tracing in one single evaluation. The study calls for a rigorous treatment of concepts, especially to avoid the risk of mechanistic heterogeneity. It unpacks important lessons in concept formation and operationalization, so as to ensure concept validity and to make strong causal inferences.