Schizophrenia is a mental illness that requires psychiatric treatment, but as has been demonstrated in recent decades, it can also be improved through psychological treatment. Therefore, it is crucial for psychologists to understand the fundamentals of the disorder, the models, and the therapeutic approaches in order to integrate a multi-faceted treatment that enables patients and their social environment to cope with the illness optimally and to reduce inpatient stays. Clinical psychologists have made a significant contribution to the understanding and treatment of this mental disorder, which is presented in this book. Gudrun Sartory, a professor of clinical psychology, has compiled essential diagnostic and therapeutic knowledge across disciplines in her overview book for the training of clinical psychologists.