Melanie Killen is Professor of Human Development,Professor of Psychology (Affiliate), and Associate Director for theCenter for Children, Relationships, and Culture at the Universityof Maryland. She is a Fellow of both the American PsychologicalAssociation and the Association for Psychological Science. She isalso a recipient of the Distinguished Scholar-Teacher Award by theProvost from the University of Maryland. Her book with Dan Hart,Morality in Everyday Life: Developmental Perspectives (1995),received the outstanding book award from AERA, and her book withSheri Levy, Intergroup Attitudes and Relations from Childhood to Adulthood, received anHonorable Mention for the Otto Klineberg Memorial Prize from SPSSI.Her research examines the development of morality, intergroupattitudes, exclusion and inclusion, peer relationships, prejudice,culture, and how social experience is related to social-cognitive development. Adam Rutland is Professor of Developmental Psychology atthe Child Development Unit and Centre for the Study of GroupProcesses in the School of Psychology at the University of Kent.Previously he has been a British Academy Post-doctoral Fellow atthe University of Surrey and been a member of Faculty at theUniversity of Aberdeen. His research examines the development ofchildren s prejudice and social identities. He has conductedrecent research into when and how children learn to self-presenttheir explicit attitudes; how intergroup contact can reducechildren s prejudice; children s exclusion of peerswithin groups and acculturation amongst ethnic minoritychildren.