Baldwin, James Mark (1861–1934), a United States psychologist. He specialized in child and social psychology. Baldwin was a founder and editor of the Psychological Review (1894–1909) and editor of Dictionary of Philosophy and Psychology (3 volumes, 1901–05). He wrote Thought and Things (1906–11) and Between Two Wars (1926). Baldwin was born in Columbia, South Carolina. He received his Ph.D. at Princeton. He taught at universities in Canada, the United States, and Mexico. During his last 20 years he lectured at Oxford and other universities.