This introduction explores the historical development of psychology through its most important representatives, movements, and schools. Readers will experience the emergence of psychological questions, investigations, and theories in their historical context, which is intended to provide students with a deeper understanding of psychology. The focus of the introduction, which also addresses socio-historical contexts, is on the representation of the 19th and 20th centuries up to contemporary sub-disciplines. This book is the most widely used introduction to the history of psychology in the German language and is considered standard reading at many universities.