Eliot Dismore Chapple (April 29, 1909 – August 9, 2000, Sarasota)[citation needed] was an American anthropologist.
In 1941, he was one of the founders of the Society for Applied Anthropology, and its first president.
[1][2] His 1942 work with Carleton Coon applied the notion of conditioned learning to understanding the human use of symbols in various cultural contexts.
[3] He later invented the Interaction Chronograph to develop this concept.
By 1970, he had understood these phenomena as emotional-interactional rhythms and part of fundamental biological rhythmic dynamics.