psychodynamic theory
a constellation of theories of human functioning that are based on the interplay of drives and other forces within the person, especially (and originating in) the psychoanalytic theories developed by Sigmund Freud and his colleagues and successors, such as Anna Freud, Carl Jung, and Melanie Klein. Later psychodynamic theories, while retaining concepts of the interworking of drives and motives to some degree, emphasize the process of change and incorporate interpersonal and transactional perspectives of personality development. See psychodynamic approach; psychodynamics.