Do investors act rationally, or are they driven by their emotions? How do the media influence investor behavior? Which recommendations from the ever-present advisors are sensible from a psychological perspective? How can investors better cope with risks, stress, and fears? These and many other questions are the subject of investor psychology. It has long been known that psychological factors play at least as important a role in capital investment as economic ones. As more and more people are called upon to take personal responsibility for investing capital for their livelihood, future, and retirement security, the importance of investor psychology is also increasing. This book describes all facets of this new discipline, taking into account not only insights from psychology but also from economics.