Cho, Sun-Joo; Cohen, Allan; Bottge, Brian - In: Psychometrika 78 (2013) 3, pp. 576-600
A multilevel latent transition analysis (LTA) with a mixture IRT measurement model (MixIRTM) is described for investigating the effectiveness of an intervention. The addition of a MixIRTM to the multilevel LTA permits consideration of both potential heterogeneity in students’ response to...