1. Personal and environmental factors associated with college dropouts among high aptitude students;Astin;Journal of Educational Psychology,1964
2. Effect of different college environments on the vocational choices of high aptitude students;Astin;Journal of Counseling Psychology,1965
3. Personal and environmental determinants of student activism;Astin;Measurement and Evaluation in Guidance,1968
4. A national research data bank for higher education;Astin;Educational Record,1966
5. Studying the effects of college education: A methodological examination of changing values in college;Barton,1959