Article (Scientific journals)
Efficient standard error formulas of ability estimators with dichotomous item response models
Magis, David
2016In Psychometrika, 81, p. 184-200
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Keywords :
Item response theory; ability estimation; asymptotic standard error; maximum likelihood; weighted likelihood; Bayesian estimation; robust estimation
Abstract :
[en] This paper focuses on the computation of asymptotic standard errors (ASE) of ability estimators with dichotomous item response models. A general framework is considered and ability estimators are defined from a very restricted set of assumptions and formulas. This approach encompasses most standard methods such as maximum likelihood, weighted likelihood, maximum a posteriori and robust estimators. A general formula for the ASE is derived from the theory of M-estimation. Well-known results are found back as particular cases for the maximum and robust estimators, while new ASE proposals for the weighted likelihood and maximum a posteriori estimators are presented. These new formulas are compared to traditional ones by means of a simulation study under Rasch modeling.
Disciplines :
Education & instruction
Author, co-author :
Magis, David ;  Université de Liège - ULiège > Département Education et formation > Psychométrie et édumétrie
Language :
English
Title :
Efficient standard error formulas of ability estimators with dichotomous item response models
Publication date :
2016
Journal title :
Psychometrika
ISSN :
0033-3123
eISSN :
1860-0980
Publisher :
Psychonomic Society, Research Triangle Park, United States - Virginia
Volume :
81
Pages :
184-200
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 29 January 2015

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