Multidimensional item response theory (MIRT) models have generated increasing interest in the psychometrics literature. Efficient approaches for estimating MIRT models with dichotomous responses have been developed, but constructing an equally efficient and robust algorithm for polytomous models has received limited attention. To address this gap,…

Policymakers have grown increasingly interested in how experimental results may generalize to a larger population. However, recently developed propensity score-based methods are limited by small sample sizes, where the experimental study is generalized to a population that is at least 20 times larger. This is particularly problematic for methods…

Social LIFE (Social Learning of Independence through Functional Experiences), a game used as a means of developing new social skills in a variety of settings and social situations and involving players and a mediator (instructor), is described. Appropriate responses to the game situations are rewarded by points or play money. Target behaviors or…