On the perceived structure of occupations

Previous studies aimed at testing the structure of occupations have been based on analysis of aggregate data. In studies comparing the hierarchical and the hexagonal-circular models for the structure of interests, the former fit the data at least as well as the latter. The present study compared separately for each subject the hierarchical and the hexagonal models as the hypothesized structures for occupations. Twenty-six students judged the similarity between all possible pairs of 24 high-level occupations, 3 occupations for each of Roe's eight fields. The findings demonstrated that (a) the within-subject structures resemble the structure found in the aggregate data; (b) the structure of occupations based on similarity judgments resembles the structure based on preference data; (c) diagnostic properties suggest that for most subjects the perceived structure of occupations can be better described as clustering than as two-dimensional; (d) a tree representation of the perceived structure of occupations is more adequate than is the two-dimensional representation; and (e) the within-subject structure fit the hierarchical model better than it fit the hexagonal-circular model for all but one subject. A detailed analysis revealed those predictions of each model which were disconfirmed by most subjects' judgments. These results provide additional support for the relative advantage of the hierarchical over the circular model. These findings' implications for the structure of vocational interests and occupational choice were discussed.