This session examines the Center for Epidemiologic Studies Depression Scale (CES-D) through Rasch modeling approaches. Guided by evidence from confirmatory factor analysis and Rasch dimensionality analyses, the study compares unidimensional and multidimensional rating scale and partial credit models. Attendees will learn how Rasch methods can be used to evaluate dimensionality and item functioning, thereby strengthening the interpretation of CES-D scores.