Sarah, I'm not sure he did any research, but certainly with the same clientle, you might look at William Perry's work in _Intellectual and ethical development in the college years_ while at Harvard. It was published by Holt, Rinehart, Winston, (1970). David C. Caverly, Ph.D. Professor, Dept. of Curr. and Instruction Southwest Texas State University San Marcos, TX 78666-4616 (512) 245-3100 [log in to unmask]