Development and Validation of the Genetic Counseling Self-Efficacy Scale (GCSES).

This study describes the development of a self-efficacy scale that is specific to genetic counseling and based both on Bandura's self-efficacy theory (2006) and the Accreditation Council for Genetic Counseling practice-based competencies (2013). The phase 1 validation compared genetic counseling students (n = 20) and genetic counselors (n = 18). Nine items were removed from the scale at this point for lack of discrimination or redundancy. The phase 2 validation included a larger cohort of genetic counseling students (n = 168). Factor analysis identified six factors accounting for 58% of the total variance. Cronbach's alpha as well as the inter-item correlations and item-total correlations of both the full scale items and underlying factors indicated that the items and factors of the scale are sufficiently related, but not redundant. The newly developed Genetic Counseling Self-Efficacy Scale (GCSES) has the potential to be used as an outcome measure in research related to training or professional development of genetic counselors as well as for a training tool.