Social justice advocacy is a necessary role for counselors. It is a part of their identity and ethical obligations to engage in advocacy with and on behalf of any individuals and communities experiencing injustice related to systemic disenfranchisement stemming from marginalized status due to race, gender, sexual orientation, ethnicity, and social economic status among others. To promote social justice in counselors, counselor education programs are increasingly emphasizing the integration of social justice pedagogy in counselor training programs. The diversity among counselor trainees and faculty presents simultaneous experiences of both privilege and oppression and this creates a challenge in determining how students develop specific interests and commitment to social justice. The purpose of this study was to explore the nature of the relationships between the social justice training environment, social justice self-efficacy, social justice outcome expectations and social justice interest and commitment among masters counseling students. The conceptualization of the development of social justice interest and commitment was based on the social cognitive career framework. The current study examined the relationship between the linear combination of social justice training environment, social justice self-efficacy, social justice outcome expectations and social justice interest and commitment. The study also examined the amount of variation in social justice commitment explained by social justice training environment, social justice self-efficacy, social justice outcome expectations and social justice interest. Finally, the study identified the most robust predictors of social justice commitment among the 116 participants in the study. Based on the findings of the study, there was a positive significant relationship between social justice self-efficacy, social justice outcome expectations and social justice interest with social justice outcome expectations being the most robust predictor of social justice interest. Regarding social justice commitment, the results showed that there was a positive significant relationship between social justice self-efficacy, social justice outcome expectations and social justice commitment with social justice self-efficacy being the most robust predictor of social justice commitment. When social justice interest was added to the predictors, the results showed a positive significant relationship between social justice interest, social justice training environment, social justice self-efficacy, social justice outcome expectations and social justice commitment with social justice interest being the most robust predictor of social justice commitment. In addition, a positive non-significant relationship between social justice training environment and social justice interest and commitment was found. The findings of the study continue to validate the applicability of the social cognitive career theory (SCCT) in conceptualizing social justice advocacy outcomes. This provides counselor educators with the impetus to utilize the SCCT framework in the process of developing the social justice interest and commitment competencies of counselors in training. [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.]