Her career as a psychologist began as Director of the Field Laboratory at the Child Education Foundation in New York City (1932–1935).

[2] She developed several valued tools in the fields of psychology and education, including Social Learning in the Schools Through Psychodrama project [3] and the Twitchell-Allen Three-dimensional Personality Test for use in CISV research and clinical practice to portray personality dynamics, irrespective of age or culture.

In addition to founding CISV in 1951, Doris Allen served as International President (1951–1956), Trustee (1956–1965), Research Chairman (1951–1967), and Honorary Counsellor (1965–2002), and simultaneously served as President (1956–1965), Research Chair / Co-chair (1956–1969) and Life Trustee (1970–2002) of CISV USA.

[4] The Doris Twitchell Allen Village (DTAV) student accommodation blocks at the University of Maine were named after her.

[citation needed] 2001 article Camp Kids Were Given Global Mission in Cincinnati Post