What term refers to the cause or source of a disorder?

The term that refers to the cause or source of a disorder is etiology. In the context of medical and psychological fields, etiology encompasses the study of factors that contribute to the development of a condition or disorder. This includes understanding the biological, psychological, social, and environmental influences that may lead to a specific illness.

Looking at the context of the other terms: psychoanalysis is a therapeutic approach that focuses on exploring the unconscious mind and its impact on behavior, rather than directly addressing the causes of a disorder. Behaviorism, on the other hand, emphasizes observable behaviors and the environmental factors that influence them, again not specifically pertaining to the underlying causes. Prognosis relates to the predicted outcome of a disorder, which is more focused on potential recovery and future progression rather than identifying the initial causes. Understanding etiology is crucial for effective treatment and intervention strategies in both medical and therapeutic contexts.