Charles Vlek is professor emeritus of environmental psychology and decision research at the University of Groningen (NL). He is one of the founders of the European Research Conference on Subjective Probability, Utility and Decision Making ('SPUDM'). He co-organized the Dutch 'Societal Discussion on Energy Policy' (1982/3) and participated in the Dutch Commission for Environmental Impacts Assessment (1986-'96). He has been an editor of "Acta Psychologica" and is a consulting editor for the "Journal of Environmental Psychology." Since 2003 he chairs a national research program on human society a...