A Psychometric Evaluation of the Career Decision Self-Efficacy Scale With Korean Students: A Rasch Model Approach

Abstract

The Career Decision Self-Efficacy Scale (CDSE) is one of the most frequently used in the field of career development and counseling. In this study, using the Rasch rating scale model analysis, the CDSE Scale was evaluated by the content, structural, and substantive aspects of validity in a sample of college students from South Korea. Overall, the 5-point Likert-type format response categories are suitable for the scale. In addition, most items, except three (17, 13, and 25), form a unidimensional trait based on the results from item-fit statistics and principle component analysis with standardized residuals. For those three differentiated items, the content evidence of the validity of the Career Decision Self-Efficacy Scale—Short Form (CDSE-SF) is suggested for future research.