Psychology is the science studying psychic and mental processes, in their conscious and subconscious components, by means of a scientific method and/or based on an intrapersonal subjective perspective. Said study, therefore, deals with a patient’s intrapsychic processes, with individual and group human behavior, and with the relationships between the patient and his/her environment.

Psychology differentiates from psychiatry: the latter is a medical discipline, focused on the treatment of psychopathological disorders, even though both share clinical psychology and psychotherapeutic treatments.