1. Joy Paul Guilford, “Creativity,” American Psychologist 5 (1950): 444–454, on 445.
2. Henry Murray, “Vicissitudes of creativity,” in Creativity and its Cultivation: Addresses Presented at the Interdisciplinary Symposia on Creativity, ed. Harold H. Anderson (Harper: New York, 1959), 40–67, on 43.
3. Calvin W. Taylor ed., Proceedings of the Third (1959) University of Utah Research Conference on the Identification of Scientific Talent (Wiley: New York, 1959), 282–286.
4. Irving A. Taylor and J. W. Getzels eds., Perspectives in Creativity (Chicago: Aldine Pub. Co., 1975), 1.
5. On the creativity movement and teaching machines see especially Sidney J. Parnes, Programming Creative Behavior: Pinal Report, Office of Education, U.S. Department of Health, Education, and Welfare, Title VII, Project No. 5-0716 (State University of New York at Buffalo, 1966).