Confirmatory factor analysis of the self-directed search test, a multitrait-multimethod approach

Abstract

Earlier research provides only partial support for the construct validity of the Self- Directed Search (SDS). Confirmatory factor analyses were performed on the SDS to investigate whether a multitrait-multimethod model is more appropriate for explaining the structural relations between the subscales rather than the model used so far in the analysis of the structure of the SDS. Data from the normative samples reported in the SDS manuals (Holland 1985b, 1987) were reanalysed. The goodness-of-fit measures indicate that the 10 factor model (Realistic, Investigative, Artistic, Social, Enterprising, Conventional, Activities, Competencies, Occupational Preferences, and Self-rating of abilities) derived from the multitrait-multimethod model is more appropriate than a six factor model confined to the personality trait factors, and that the construct validity of the SDS is supported.