ABSTRACT: This study develops a short, general scale to measure sustainable product involvement. This is done in a Costa Rican context, via a relatively large sample, demographically similar to the national population. The study also evaluates the viability of the C-OAR-SE scaling technique for this purpose. A five-item instrument is developed, its reliability and validity psychometrically confirmed. The scale addresses the levels and types of involvement that consumers might have. It suits not only academic researchers, but also practitioners in different areas. We conclude that C-OAR-SE is a viable technique. It complements traditional psychometric methods well, to be considered by researchers in the different fields of business.