Career development studies show that First Generation College Students (FCGS) have unique career development needs, less college knowledge, and the increased likelihood that they will not complete college. There is evidence in the research that changing majors could impact a student's ability to complete college successfully, especially if they change majors late in their college experience. FGCS may be differently impacted by changing majors than their non-first generation peers because they have unique career development needs that negatively impact their career paths and decisions. The goal of this research was to gain a better understanding of how changing majors might impact the career decision-making self-efficacy of FGCS (particularly those who are redeciding). The Career Decision-Making Self Efficacy Scale-Short Form was used to compare the career decision-making self-efficacy of first generation college students who changed their majors to first generation college students who did not change their major. Results of a one-way ANOVA comparing the mean CDSE-SF scores of FGSC who did not change their major to those who did change their major at least one time did not render any statistically significant differences. A meaningful difference was found (F(1, 227) = 1.092, p >0.05) between the means of the two groups was found for the self-appraisal item, "Decide what you value most in an occupation." Additionally, when comparing FGCS with 90 or more credit hours, a statistically significant difference in CDSE-SF item "Prepare a good resume" was found between those who changed majors at least once and those who did not change majors at all. The mean score for FGCS was significantly lower (M = 3.83, SD = 1.039) than the mean score of A comparison of the grade point averages of first generation college students who did not change their majors and those who did change their major resulted in a statistically significant difference t (221) = 2.233, p < 0.05) between the mean GPA of the two groups. A comparison of the academic performance (as measured by grade point averages) of first generation college students who did not change their majors and those who did change their major resulted in a statistically significant difference t (221) = 2.233, p <0.05) between the mean GPA of the two groups. This analysis revealed that the first-generation college students who did not change their major had a significantly higher GPA (M = 3.25, SD = 0.449) than the first-generation college students who did change their major at least one time (M = 3.10, SD = 0.536). This analysis revealed that the first-generation college students who did not change their major had a significantly higher GPA ( M = 3.25, SD = 0.449) than the first-generation college students who did change their major at least one time (M = 3.10, SD = 0.536).This finding suggests that the career decision-making self-efficacy of first generation college students might not be impacted by changing majors. Further research that addresses the career decision-making needs of specific groups of FGCS, particularly low-income students, is recommended. [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://www.proquest.com/en-US/products/dissertations/individuals.shtml.]