1. Bate, E. The Effect of Especially Prepared Materials in a Learning Program in Human Growth and Development on the Tenth Grade Level, unpublished Ph. D. Dissertation, University of Iowa, 1948.
2. Kahn, R. L. The Comparison of Two Methods of Collecting Data for Social Research: The Fixed-Alternative Questionnaire and the Open-Ended Interview, unpublished Ph. D. Dissertation, University of Michigan, 1952.
3. The prediction of success in the VA training program in clinical psychology.
4. McDonald, B. The Preparation and Testing of Materials on Behavior and Development for Social Science Classes, unpublished Master’s Thesis, University of Iowa, 1946.