Answer;
All of the above
Erikson, Horney, Sullivan
Step-by-step explanation;
Erikson developed his theory by working with and studying children’s behavior. Horney developed the theory of interpersonal development of neurosis, theory of social-environmental influences on personality and also emphasized importance of gender socialization.
-Harry stack Sullivan maintained Freudian concepts of anxiety and unconscious, emphasized interpersonal factors even more than Adler & Horney, emphasized middle childhood and adolescence more than other theorists and also stated that self cannot be conceived without relationships.