Social change, such as the consequences of German unification, is likely to impact normative as well as maladaptive development during adolescence. Beyond documenting effects by comparing adolescents' psychosocial development at various time periods of the unification process, this book offers insights into the macro and micro level mechanisms that bring about the changes, such as demands by new social institutions or challenges facing families. Furthermore, the book offers a rich collection of statistical methods appropriate for the analysis of data on individual development in times of rapid social change.