Holland influenced practice and research in career development by contributing a clear theory useful in organizing information about individuals and career alternatives and for understanding individuals' entry and persistence in occupational and other environments. His theory was repeatedly revised in response to evidence. As Holland's own career…

Self-beliefs are not measures of ability and skill but they are correlated with interests and activities and are useful predictors of occupational choices. Holland's theory of vocational personalities provides a framework compatible with Social Cognitive Career Theory and goal theory; the Self-Directed Search is a viable means of assessing…