Hereditary influences on vocational preferences as shown by scores of twins on the Minnesota Vocational Interest Inventory

Abstract

The Minnesota Vocational Interest Inventory (MVII) scores of 53 fraternal pairs of twins showed greater within-pair variances than did the scores of 71 identical pairs. For 9 of the scores and 4 of the area keys the F test showed a statistically significant increase in within-pair variance for the fraternal twins. This is interpreted as evidence for a hereditary component in interests in occupations requiring no scientific ability. The hereditary influence operates probably through personality variables. (PsycInfo Database Record (c) 2025 APA, all rights reserved)