Psychotherapy is a strong component of many therapeutic approaches to treating problems including PTSD, substance addiction, and eating disorders. Scientists these days recognize that a number of different fields are involved with brain research.  This realization has led to the emergence of cognitive science, a discipline that aims to connect researchers from many different disciplines, including psychology, artificial intelligence, philosophy, neuroscience, learning, linguistics, anthropology, and sociology.  Cognitive science students typically do coursework in linguistics, philosophy, psychology, and computers, providing a broad, interdisciplinary education.