Why do people not buy electric vehicles? How can we explain people's reaction to renewable energy? What can we do to reduce people's energy use? In my research I look at processes that explain behaviour change, including public acceptance of policies and technological changes. I am also interested in what explains decisions or opinions and how this is based on various psychological factors, such as emotions, trust, fairness or social norms. Moreover, I study if and how these decisions or opinions may be changed using different strategies and policies. My work has always been applied and interdisciplinary in nature, as I'm interested in complex societal issues, for example around energy, transportation, and the use of raw materials. Hence, I work with scholars in many different disciplines such as engineers, economists, mathematicians, geographers, and political scientists, as well as with industry in these areas. I am interested in the research processes in interdisciplinary projects in general, and the role that social sciences in particular play in them.