The monograph consists of seven related papers written during the past five years focusing on measuring the vocational interests of young adults. Its stated purpose is to provide both a conceptual framework and a practical foundation for interpreting the world of work to students in terms of their own characteristics and vocational interests. The papers describe one approach to relating interests and occupations based on the circular configuration of interests and occupations proposed by John L. Holland. This approach labels occupational categories as: realistic, intellectual, artistic, social, enterprising, and conventional. The papers offered are: (1) An Empirical Occupational Classification Derived from a Theory of Personality and Intended for Practice and Research, (2) An Analysis of Spatial Configuration, (3) A Spatial Configuration of Occupations, (4) An Analysis of the Structure of Vocational Interests, (5) On Measuring the Vocational Interests of Women, (6) The Vocational Interests of Students in Career-Oriented Educational Programs, and (7) Relating High School Interests to Occupations Five Years After High School. Collaborating authors are John L. Holland, Douglas R. Whitney, Nancy S. Cole, James M. Richards, Jr., James W. L. Cole, Gary R. Hanson, Dale J. Prediger, and John D. Roth. A 61-item list of American College Testing (ACT) publications concludes the document. (MW)