The relationship between separate dimensions of vocational maturity and different self-concept and identity variables were examined. Subjects were Dutch students, age 14-18 years. The vocational maturity dimensions were measured by Dutch adaptations of American vocational maturity scales. Instruments for self-concept and identity measurement were developed. The first study looked at whether differences in self-concept content correspond with differences in vocational maturity. Findings indicate that students who view themselves as intelligent, accurate, industrious, well-mannered and business-like are the most vocationally mature. The second relationship studied was between vocational maturity and self-esteem. It was hypothesized that high self-esteem people would be more certain about occupational choice and more ready to decide. This hypothesis was confirmed. The variable Planning Orientation has a positive, (but not statistically significant) correlation with self-esteem. The final relationship examined was between vocational maturity and identity aspects. Results indicate that vocational maturity is more related to internal than external identity. Knowing and accepting oneself is found to be of more importance for vocational planning and decision-making than being certain of one's public self-definition. These results underline the importance of guidance and counseling for self-knowledge and acceptance. (Author/JLL)