De Gruijter, Dato N. M.2011-04-062011-04-061986de Gruijter, Dato N. (1986). Small N does not always justify Rasch model. Applied Psychological Measurement, 10, 187-194. doi:10.1177/014662168601000210doi:10.1177/014662168601000210https://hdl.handle.net/11299/102298In many applications of item response theory, it is of little consequence whether the Rasch model or a more accurate, but more complicated item response model is used. With small sample sizes, it might be advantageous to employ the Rasch model. A clear counterexample is the case of optimal item selection under guessing.enArticle