This document discusses behavioral therapy (BT), which aims to change maladaptive behaviors through conditioning principles. BT utilizes techniques like systematic desensitization, flooding, aversion therapy, modeling, shaping, and operant conditioning to treat various conditions like phobias, depression, OCD, anxiety disorders, schizophrenia, and more. The nurse's role is to provide a calm environment, help the patient understand the therapy, encourage expression of feelings, record important information, and continue sessions until improvements are seen.