The present study was undertaken to determine whether a 14-cluster occupational structure similar to Knapp's (1976) would result from factor analysis based on sex-balanced interest items. Results supported the structure found previously based on non-sex-balanced items. (Author/GK)

The Jackson Vocational Interest Survey was administered to 10,134 high school college-bound students to appraise the degree to which student profiles for different academic majors could be clustered in a meaningful way. The clustering approach showed definite advantages over the traditional item-based scoring, resulting in more reliable score.…

Raw-score reports of vocational interest, personality traits and other psychological constructs are coming into common use. Using college seniors' scores on the American College Test Interest Inventory, criterion-related validity of standard scores based on same-sex and combined-sex norms was equal to or greater than that of raw scores.…

The construct validity of vocational interest test scores was examined by finding the interest profiles of 15,447 college students in 51 majors. Standard scores based on same-sex norms were found to be more valid on this criterion than were raw scores. (CTM)