1. Astin, A. W., and Panos, R. J. The educational and vocational development of college students. Washington, D. C.: American Council on Education, 1969
2. Berdie, R. F. Pre-college experiences of University of Minnesota freshmen. Office of the Dean of Students Research Bulletin. University of Minnesota, 1967, 9 (1).
3. Kohlberg, L. The development of modes of moral thinking and choice in the years ten to sixteen. Unpublished doctoral dissertation, University of Chicago, 1958.
4. Kurtines, W. and Grief, E. B. The development of moral thought! Review and evaluation of Kohlberg's approach. Psychological Bulletin, 1974, 81 (8), 453?470.
5. Lenning, O. T., Munday, L. A., Johnson, O. B., Vander Well, A. R., and Brue, E. J. The many faces of college success and their nonintellective correlates. The published literature through the decade of the sixties. Iowa City, IA: ACT Publications, 1974.