Gonçalves, F.B.; Gamerman, D.; Soares, T.M. - In: Computational Statistics & Data Analysis 59 (2013) C, pp. 144-160
Item Response Theory (IRT) is a psychometric theory widely used in educational assessment and cognitive psychology to analyse data emerged from answers given to items contained in exams, questionnaires, etc. Standard IRT, however, is based on models which assume that items behave equally to all...