1. Boyce, E. M. “A Comparative Study of Overachieving and Underachieving College Students on Factors other than Scholastic Aptitude.” Unpublished doctorial dissertation, Univ. of Wisconsin, 1956.
2. Forrest, D. V. “A Comparative Study of Male Secondary School Underachievers Matriculating at the University of South Dakota.” Unpublished doctoral dissertation, Univ. of South Dakota, 1966.