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APA Historical Database: Selected Entries


On November 19:

1898 — William H. Sheldon was born. Sheldon's constitutional psychology was a system that related endomorphic, ectomorphic, and mesomorphic body types to normal and abnormal personality.

1901 — John B. Watson began his first psychology experiment as a graduate student at the University of Chicago. He studied maze learning in rats.

1952 — Clark Hull's book A Behavior System was published, explaining Hull's hypothetico-deductive theory of behavior.

1959 — Representatives of 16 state psychology boards meeting in Chicago agreed that a national organization was needed to establish uniform licensing examination procedures. A constitutional committee, chaired by Joseph R. Sanders, was appointed and undertook steps eventually leading to the formation of the American Association of State Psychology Boards. This organization is now named the Association of State and Provincial Psychology Boards.

1978 — The Society of Behavioral Medicine was founded in Chicago.


Copyright © 1995, American Psychological Association. Web version by permission. Source: Street, W. R. (1994). A Chronology of Noteworthy Events in American Psychology. Washington, DC: American Psychological Association. The American Psychological Association and Central Washington University have supported the development of the APA Historical Database.

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