- 1934 – Bill Wilson, co-founder of Alcoholics Anonymous, takes his last drink and enters treatment for the final time.
- 1966 – Augusta Fox Bronner, American psychologist, specialist in juvenile psychology (b. 1881).
- 1979 – James J. Gibson, American psychologist and author (b. 1904).
You can find an outline of Bill Wilson here.
Augusta Fox Bronner
Augusta Fox Bronner (22 July 1881 to 11 December 1966) was an American psychologist, best known for her work in juvenile psychology. She co-directed the first child guidance clinic, and her research shaped psychological theories about the causes behind child delinquency, emphasizing the need to focus on social and environmental factors over inherited traits.
James J. Gibson
James Jerome Gibson (27 January 1904 to 11 December 1979), was an American psychologist and one of the most important contributors to the field of visual perception. Gibson challenged the idea that the nervous system actively constructs conscious visual perception, and instead promoted ecological psychology, in which the mind directly perceives environmental stimuli without additional cognitive construction or processing.
A Review of General Psychology survey, published in 2002, ranked him as the 88th most cited psychologist of the 20th century, tied with John Garcia, David Rumelhart, Louis Leon Thurstone, Margaret Floy Washburn, and Robert S. Woodworth.