A correlational student was conducted to explore the relationships between student affairs professional self-efficacy, participation in professional development, and career commitment. For the quantitative portion, the researcher ran Pearson r correlations for self-efficacy scores, career commitment scores, and the number of professional development sessions participants attended. For the qualitative portion, the researcher conducted a content analysis of responses to six structured interview questions the researcher developed. The data analysis revealed that self-efficacy had a moderate relationship with career commitment and participation in professional development. These findings were only approaching significance. The analysis further revealed that participation and career commitment had a weak relationship, but the relationship was not significant. Further research is needed to predict self-efficacy in student affairs professionals. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]