Linda Steg is professor of environmental psychology at the University of Groningen, the Netherlands. Her main research interests focus on understanding and changing environmentally significant behaviour, in particular car use and household energy use. She is especially interested in the role of norms, values, and moral concerns in explaining environmental behaviour. Also, she studies strategies and conditions for behaviour change, and the effectiveness and acceptability of environmental and traffic policies. She is involved in various multidisciplinary research projects on sustainable development. Among other activities, she is president-elect of the Environmental Division of the International Association of Applied Psychology, treasurer of the Traffic and Transport Division of the International Association of Applied Psychology, coordinator of the IAPS sustainability network, fellow of the Energy Delta Research Centre at the University of Groningen and organiser of the First Summer school on Theories in Environmental Psychology (FirstSTEP) in 2009.