A Vocational interest test minus sex bias

The Vocational Preference Inventory responses from 290 subjects (110 males and 180 females) were subjected to a Rasch item analysis, one of a class of latent trait models. After elimination of 22 items which did not fit the model, a sex-free form of the VPI was obtained. Group interest scale scores are presented for each of the Holland scales and data are produced which indicate that no violence was done to the Holland coding system.