Factor analysis of twenty-seven similarly named scales of the Strong Vocational Interest Blank and the Kuder Occupational Interest Survey, Form DD

Compares the factor structures of the similarly named scales of the SVIB and Kuder Occupational Interest Survey (OIS), Form DD. 4 factors emerged from the analysis on the OIS and 5 factors were isolated on the SVIB. The OIS factors contain meaningful groupings of scales. This result and the high intercorrelations among the scales within the factors indicate that grouping occupational scales on the OIS is as appropriate as on the SVIB. Interpretations that attempt differentiation of a person's interests on the basis of individual scale scores within a factor are not advised. In a merged factor analysis of the 2 inventories, joint factors did not emerge.