Betz is one of the most prolific and visible scholars in the world in the areas of career-self-efficacy theory, empirical applied research, and assessment. She and her collaborators developed numerous domain-relevant self-efficacy measures (e.g., Occupational Self-Efficacy Scale; Mathematics Self-Efficacy Scale; Skills Confidence Inventory; Social Self-Efficacy Scale; Career Decision Self-Efficacy Scale; and the Expanded Skills Confidence Inventory). The development of these scales was crucial to providing researchers the means for applying self-efficacy theory to their own work. Betz’s work has had an impact on both national and international researchers who study the applications of self-efficacy theory to career development.
In 1976 Betz received her doctorate degree in psychology at the University of Minnesota. Her dissertation, "The effects of immediate knowledge of results on computer-administered tests of verbal ability," was advised by Professor David Weiss (Book of PhDs #721).