Presents a mathematical model utilizing three-letter codes of personality patterns determined from the Self Directed Search. This model compares personality types over time or determines relationships between personality types and person-environment interactions. This approach is consistent with Holland's theory yet more comprehensive than one- or…

Tested the predictive validity of Holland's constructs of congruence and consistency defined according to the hierarchical model for the structure of interests. A follow-up study of adults tested as high school seniors showed the hierarchical and circular models are of similar efficiency in predicting occupational choice satisfaction. (Author/JAC)

Examined women with stable and unstable career choices over four years. Findings supported the importance of congruence in stable women; differentiation and consistency operated similarly for women with stable and unstable choices. (Author/RC)