Introduction: Behavior in Its Place; Part I--Media as Change Mechanisms Media and Behavior: A Missing Link; Media, Situations, and Behavior; Why Roles Change When Media Change; Part II--From Print Situations to Electronic Situations The Merging of Public Spheres; The Blurring of Public and Private Behaviors; The Separation of Social Place from Physical Place; Part III--The New Social Landscape New Group Identities; New Ways of Becoming; Questioning Authority; Effect Loops; Part IV--Three Dimensions of Social Change The Merging of Masculinity and Femininity; The Blurring of Childhood and Adulthood; Lowering the Politica