#652: An Item Response Theory Model for Multiple Resubmissions

Item response theory models (IRT) are commonly used to model students' responses to test items. Under IRT, the associations among item responses are modeled by a latent variable. However, most IRT models are not suitable for modeling multiple resubmissions which are common in a learning environment. Students may be allowed to revise and resubmit multiple times after each submission. In this paper, we develop an IRT model for multiple resubmissions. The utility of this model is demonstrated through analyzing a real data set from a recently developed novel authentic assessment of programming skills.