This is a complete textbook that accompanies our themantic approach to teaching IB Psychology. The text is arranged in a unit-by-unit, topic-by-topic, lesson-by-lesson structure. Our approach is to have instead of the approaches and options as separate entities, the topics within these are aligned in four units (Criminology; Social Influence; Love and Marriage; PTSD). The result is a more in-depth exploration of psychology in less time. All the relevant units, topics and lessons are also provided for other aspects of the course, such as research methods, ethics, HL extensions and the IA.