The book focuses on the psychological and sociological analysis of the postmodern personality. For the first time, it brings together two strands of theory: the approach of social milieus and the psychoanalytically oriented character theory in the tradition of Erich Fromm. Starting from an analysis of societal change at the beginning of the 21st century, the book initially presents previously unpublished data on the lifestyle and everyday culture of individuals from postmodern milieus in an international comparison. Another key focus of the book is the empirical investigation of the postmodern personality based on a representative survey conducted in Germany in 2005, for which the authors developed a specific social-psychological toolkit, and the results are published here for the first time. Central to this is the postmodern self-identity.