Stephan Slingerland is founder of SPA Sustainability and works part-time for Duneworks. Understanding the role of social transition in relation to technological innovation and economic restructuring is for him a crucial condition for a successful transition to a sustainable society. Within that context he investigates the motivations and the behaviour of citizens, organisations and nation-states. Previously Stephan worked for the Dutch Environmental Assessment Agency (PBL), the Dutch Institute of Foreign Affairs Clingendael and other organisations on a large variety of projects for European and Dutch institutions and governments. Stephan studied natural and environmental sciences at the universities of Leiden and Cambridge. He obtained his PhD at the University of Amsterdam with a thesis on sustainable organisational models for national electricity sectors in Europe.