Welcome to flexMIRT®

flexMIRT® is software specifically designed for the analysis of item response data, such as what is obtained from a quality-of-life measure, attitude survey, or educational test. flexMIRT fits a wide variety of item response theory (IRT) models to model both unidimensional and multidimensional structures (such as when some items measure more than one concept) and provides a wide variety of item and model fit statistics and scoring methods.