1. Assessing the vocational maturity of students in the East Central State of Nigeria
2. Predicting persistence, stability, and achievement in college by major choice consistency: A test of Holland's consistency hypothesis
3. The application of general developmental principles to the vocational area.
4. “The Relationship of Occupational Choice to Ego Identity and Self-Concepts.” Unpublished doctoral dissertation, Utah State University, 1968.
5. “Ego Identity Status in Late Adolescent College Males, as Measured by a Group-Administered Incomplete Sentences Blank and Related to Inferred Stance Toward Authority (Identification with, Rebellion against, and Humanization of Authority Figures).” Unpublished doctoral dissertation, New York University, New York, 1973.