Research in the field of Career Maturity is reviewed and summarized, with particular attention to Super's Career Pattern Study, Gribbons and Lohnes' Career Development Study, and Crites' Vocational Development Project. Crites' organization and revision into a hierarchical structure of the five dimensions of vocational maturity proposed in Supers' Career Pattern Study are discussed. Work to develop a Career Maturity Inventory to measure the hypothesized dimensions, taking into account both cognitive and connative factors, is summarized. Research into correlates of career maturity is reviewed. The interrelationship between career maturity and career education is stressed, and it is pointed out that the research on career maturity can provide the concepts and tools which career education requires to conceive and evaluate curricula and training programs. (Author/DB)