Using a ”Perception and Preference” Scale to measure 20 levels of personality, an activity for enhancing students' self-recognition and self-analysis was conducted. The graduate students who took the course of ”Health Education” were selected as target population. Results indicate that few personality characteristics are different between schools, and between sexes/ages. On the part of students, results concerning self-recongition are bases for under-standing the complexity of human behaviors. On the part of instructors, more under-standing toward students facilitates teaching.