The psychology of religion is mostly practised in Germany in the field of practical theology and religious education, and does not represent an independent subdiscipline of psychology. Theories of religious development are therefore often influenced by their theological context. In this volume, Allolio-Näcke examines common models of religious development from a psychological perspective and, for the first time in 40 years, outlines a distinct cultural-psychological theory of religious development. The volume concludes with the presentation of a historical framework that traces the emergence of the psychology of religion and situates it within the scientific canon.