A sample of male Investigative subjects (N=171) who completed the SDS as freshmen in 1970 was sent a questionnaire four years later. Results indicated that, for Investigative-type freshman males, the SDS has moderately high efficiency in predicting, four years later, their ultimate major and their immediate and future vocational plans. (Author)

Holland's (1973) theory of vocational choice proposes a typology of, and a match between, people and occupations. The Self Directed Search (SDS) can be used to assess people's occupational orientation types. To assess the construct validity of Holland's theory of occupational preferences, 171 female industrial workers participated in a study,…

The Vocational Preference Inventory (VPI) and the Self-Directed Search (SDS) were administered to 102 Black women workers in occupational environments consistent with Holland's six vocational environments. Four scales in each test successfully differentiated the occupational groups, supporting the concurrent validity of Holland's theory for…

Tests Holland's assertion that stability of vocational choice can be predicted from: (a) congruence of personality with chosen career; (b) differentiation of personality; and (c) internal consistency of personality characteristics. The relationship of three constructs to stability of choice of college major was studied among 167 university…

High school males (N=66) and 60 high school females were tested for anxiety and vocational maturity levels. The experimental subjects were given the Self Directed Search (SDS). Statistical analysis indicated that the SDS was an effective instrument in reducing career indecision. (Author)