American Psychological Association was founded by Morton Prince and others in opposition to parapsychology and in support of multiple personality.

“The American Society for Psychical Research was founded in 1884 in Boston, Massachusetts. Among other founding members were the psychologists G. Stanley Hall, James Mark Baldwin, Joseph Jastrow, and Christine Ladd-Franklin. Among the first vice Presidents were Hall, William James and the philosopher Josiah Royce. The mathematician Simon Newcomb was the first President. The early members of the society were skeptical of paranormal phenomena. Hall and Jastrow took a psychological approach to psychical phenomena. By 1890 they had resigned from the society. Hall and Jastrow became outspoken critics of parapsychology. Other early members from the society including Morton Prince and James Jackson Putnam left the ASPR in 1892 to form the American Psychological Association” (1).

Morton Prince (2) was known for his study of multiple personality. He is mostly remembered today for The Dissociation of a Personality, his book about Christine Beauchamp (3), a woman with multiple personality.

1. Wikipedia. American Society for Psychical Research. https://en.wikipedia.org/wiki/American_Society_for_Psychical_Research

2. Wikipedia. Morton Prince. https://en.wikipedia.org/wiki/Morton_Prince

3. Wikipedia. Christine Beauchamp (pseudonym). https://en.wikipedia.org/wiki/Christine_Beauchamp_(pseudonym)