Andrich, David; Marais, Ida; Humphry, Stephen - In: Journal of Educational and Behavioral Statistics 37 (2012) 3, pp. 417-442
the hypothesis tested, namely, whether random guessing to multiple choice items affects their estimates in the Rasch model …. Taking random guessing to be a function of the difficulty of an item relative to the proficiency of a person, the authors … describe a method for creating a subsample of responses, which is least likely to be affected by guessing. Then using Andersenâ …