Lynd, Robert Staughton, 1892–1970, American sociologist, b. New Albany, Ind.; grad. Princeton (B.A., 1914), Ph.D. Columbia, 1931. He taught at Columbia for 30 years (1931–61). With his wife, Helen Merrell Lynd, he authored two noted sociological studies of Muncie, Ind., Middletown: A Study in Contemporary American Culture, (1929) and Middletown in Transition (1937). Lynd was active in labor and civil-rights movements, and wrote Knowledge for What? (1939).