A comparison of Holland's model using constructs measured by two different methods

The relationship was studied between the set of constructs specified by Holland's 1973 theory (viz, Realistic, Intellectual, Artistic, Social, Enterprising, and Conventional) measured by an Adjective List (AL) derived from Holland's theory and the same set of constructs as measured by the Vocational Preference Inventory (VPI). The correspondence of the two measures of Holland's model compared the distances between the constructs as measured by the AL and the constructs measured by the VPI in factor space using an adaptation of a model testing procedure reported by Wakefield and Doughtie 1973. The subjects were 174 undergraduates at a state university. The correspondence between the two separate measures of Holland's model was significant (p < .01). These results provide further support of the construct validity of Holland's theory and offer evidence that the relationships hypothesized by the theory are not tied to any one particular method of measurement.