Task: Text Categorization
Input (English): As a college student, he was one of ten people selected to attend the "World Student Christian Federation Conference" in China. After switching professions he embarked on a detailed study of Otto Rank's theories and created a theory expounded upon in his A Way of Being and On Becoming a Person. He introduced the notion of organismal valuing and positive regard on his way to advocating a plan that minimized the psychologist's talking in counseling. FTP, name this creator of nondirective or client-centered therapy.
Output (English): Social Science