Development of new scales from test items usually requires several hundred cases in each of the defined groups. Application of multivariate techniques to existing test scales also encounters such problems as multicolinearity, combining ipsative with normative measures and ordinal with equal interval scales, differential prediction, and communication of multiple scale scores to untrained users. To meet these problems a method was devised whereby multiple scales from different tests could be treated as items, yielding new scales with high validities (several in the .90's) and normal to negligible shrinkage, even when developed on relatively small groups. The results were well received by cadets, counselors, and educators, and for 2 years have been incorporated as a regular part of the cadet academic counseling program. The statistical development procedures and the results are illustrated using the Strong-Campbell Interest Inventory. (Author)