Mary Whiton Calkins (1863–1930) was fourteenth President of the American Psychological Association, invented the paired-associate technique, founded an early psychological laboratory, and developed a system of self-psychology. Her eminence as a psychologist and a scholar was widely acknowledged and she was the recipient of two honorary degrees. Calkins published prolifically in both psychology and philosophy, moving away from psychology into philosophy during the latter half of her career. Both her work in psychology and philosophy came to center on the importance of the self. Calkins studied with William James, Josiah Royce and Hugo Münsterberg at Harvard in the 1890s, and although she completed all the requirements for the Ph.D., she was not granted the degree because she was a woman. In 1902, she was offered a Radcliffe degree which she declined on principle, because she believed that work done at Harvard should be recognized by a Harvard degree regardless of whether the recipient was a female or a male. On many occasions throughout her life, she expressed her opposition to differentiation between the sexes based on the assumption of inherent differences in mental abilities.
Schizophrenia and the Self: Contributions of Psychoanalytic Self-psychology