The standard work by the leading attachment expert in the German-speaking world. Many illustrative clinical examples. Karl Heinz Brisch outlines the possibilities of understanding and classifying mental disorders in infants, children, adolescents, and adults from an attachment perspective. The attachment-based psychotherapy he developed opens new avenues for successfully treating even the most severe disorders. He takes into account inpatient, outpatient, as well as individual and group settings. The latest findings from neuroscience, epigenetics, and psychoneuroimmunology have been incorporated into the new edition. What can parents do to raise a securely attached child? How do attachment disorders manifest in school-aged children, adolescents, and adults? This book can be beneficial not only for parents, but also for teachers and psychotherapists.