Summary
After the determination of the basic dimensions of occupational interests by means of the BC TRY (B = Berkeley; C = Chapter; TRY = Tryon, or to Try new computer ideas) system of cluster analysis of test items (V-analysis), (the) individuals were grouped together on the basis of the similarity of their inventory profiles into person-clusters (O-analysis). The result was a successful condensation of a large number (N = 500) of individuals, on the basis of their test profiles, into a smaller number of core O-types (i.e., groups of persons with similar profiles): namely, 11. In any particular O-type, homogeneous groups tended to cluster together. That is, for a particular curricular group there was at least one O-type profile representing an attraction pattern (presence in the O-type) and an O-type profile representing an avoidance pattern (absence from the O-type).