1. Educational Psychology: A Cognitive View, New York: Holt, Rinehart and Winston, 1968.
2. “The development of the concept of heat in children,” unpublished Ph.D. dissertation, University of Illinois, 1974.
3. “The representation of causal frameworks in young adolescent science students,” unpublished Ph.D. dissertation. University of Illinois, 1973.
4. “A detailed analysis of a child's conception of physical phenomena,” unpublished Ph.D. dissertation. University of Illinois, 1972.
5. “Framework dynamics in pre-adolescents: An analysis of clinical interviews concerned with heat and temperature phenomena,” unpublished Ph.D. dissertation. University of Illinois, 1973.