The specific problem confronted by this dissertation research is this: Do college students who are quite decided about their vocational choices have more developed and implemented self-concepts than do college students who are quite undecided about their vocational choices? If the decided students have more developed and implemented self-concepts than the undecided students, it can be logically reasoned that the developing and implementing of the self-concept is essential in the vocational choice process of college students. The purpose of this study is to resolve the problem concerning the possible self-conceptual differences between highly decided and highly undecided college students.