Answers are grounded in this paper and cite their sources.
Harold Clurman, Morris Carnovsky, Robert Lewis, Cheryl Crawford, Clifford Odets, Sanford Meisner, Stella Adler, Phoebe Brand, Margaret Barker, Ruth Nelson, Elia Kazan, Ralph Steiner, Mordecai Gorelik, Lee Strasberg, Looking Back: 1974-1976, Educational Theatre Journal, Vol. 28, No. 4, Reunion: A Self-Portrait of the Group Theatre (Dec., 1976), pp. 471-552
No takes yet. Share an insight, caveat, or question.
Clurman et al. (1976) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: