caa a22 4500 606241736 CHVBK 20210128101314.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s11336-013-9378-5 doi (NATIONALLICENCE)springer-10.1007/s11336-013-9378-5 Magis David Department of Education (B32), University of Liège, Boulevard du Rectorat 5, 4000, Liège, Belgium aut A Note on Weighted Likelihood and Jeffreys Modal Estimation of Proficiency Levels in Polytomous Item Response Models [Elektronische Daten] [David Magis] Warm (in Psychometrika, 54, 427-450, 1989) established the equivalence between the so-called Jeffreys modal and the weighted likelihood estimators of proficiency level with some dichotomous item response models. The purpose of this note is to extend this result to polytomous item response models. First, a general condition is derived to ensure the perfect equivalence between these two estimators. Second, it is shown that this condition is fulfilled by two broad classes of polytomous models including, among others, the partial credit, rating scale, graded response, and nominal response models. The Psychometric Society, 2013 item response theory nationallicence polytomous models nationallicence weighted likelihood nationallicence Jeffreys modal nationallicence Psychometrika Springer US; http://www.springer-ny.com 80/1(2015-03-01), 200-204 0033-3123 80:1<200 2015 80 11336 https://doi.org/10.1007/s11336-013-9378-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11336-013-9378-5 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Magis David Department of Education (B32), University of Liège, Boulevard du Rectorat 5, 4000, Liège, Belgium aut NATIONALLICENCE 773 0- Psychometrika Springer US; http://www.springer-ny.com 80/1(2015-03-01), 200-204 0033-3123 80:1<200 2015 80 11336