Don't Tie Yourself to an Onion: Don’t Tie Yourself to Assumptions of Normality

Maarten Marsman, Gunter Maris, Timo Bechger

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

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Abstract

A structural measurement model (Adams, Wilson, & Wu, 1997) consists of an item response theory model for responses conditional on ability and a structural model that describes the distribution of ability in the population. As a rule, ability is assumed to be normally distributed in the population. However, there are situations where there is reason to assume that the distribution of ability is nonnormal. In this paper, we show that nonnormal ability distributions are easily modeled in a Bayesian framework
Original languageUndefined
Title of host publicationPsychometrics in practice at RCEC
EditorsTheodorus Johannes Hendrikus Maria Eggen, Bernard P. Veldkamp
PublisherRCEC
Pages103-114
ISBN (Print)9789036533744
DOIs
Publication statusPublished - 2012

Publication series

Name
PublisherRCEC

Keywords

  • Item Response Theory
  • one-parameter logistic model
  • finite mixture
  • Markov chain Monte Carlo
  • plausible values
  • IR-80205
  • Bayes estimates
  • Gibbs sampler

Cite this

Marsman, M., Maris, G., & Bechger, T. (2012). Don't Tie Yourself to an Onion: Don’t Tie Yourself to Assumptions of Normality. In T. J. H. M. Eggen, & B. P. Veldkamp (Eds.), Psychometrics in practice at RCEC (pp. 103-114). RCEC. https://doi.org/10.3990/3.9789036533744.ch8
Marsman, Maarten ; Maris, Gunter ; Bechger, Timo. / Don't Tie Yourself to an Onion: Don’t Tie Yourself to Assumptions of Normality. Psychometrics in practice at RCEC. editor / Theodorus Johannes Hendrikus Maria Eggen ; Bernard P. Veldkamp. RCEC, 2012. pp. 103-114
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Marsman, M, Maris, G & Bechger, T 2012, Don't Tie Yourself to an Onion: Don’t Tie Yourself to Assumptions of Normality. in TJHM Eggen & BP Veldkamp (eds), Psychometrics in practice at RCEC. RCEC, pp. 103-114. https://doi.org/10.3990/3.9789036533744.ch8

Don't Tie Yourself to an Onion: Don’t Tie Yourself to Assumptions of Normality. / Marsman, Maarten; Maris, Gunter; Bechger, Timo.

Psychometrics in practice at RCEC. ed. / Theodorus Johannes Hendrikus Maria Eggen; Bernard P. Veldkamp. RCEC, 2012. p. 103-114.

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

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KW - Markov chain Monte Carlo

KW - plausible values

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Marsman M, Maris G, Bechger T. Don't Tie Yourself to an Onion: Don’t Tie Yourself to Assumptions of Normality. In Eggen TJHM, Veldkamp BP, editors, Psychometrics in practice at RCEC. RCEC. 2012. p. 103-114 https://doi.org/10.3990/3.9789036533744.ch8

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