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Presentation
Evaluation of item parameter recovery estimation by ACER ConQuest software
Paper presented at the European Conference on Educational Research (2014)
  • Luc T Le, ACER
  • Ray Adams, ACER
Abstract
ACER ConQuest (Adams, Wu, and Wilson, 2012) has been popularly used for analysing testing and assessment data. Two of the most common estimation methods for Rasch measurement models (Rasch, 1960/1980) are available in this software, marginal maximum likelihood estimation (MML) and joint maximum likelihood estimation (JML). This study is concerned with item parameter recovery for the dichotomous Rasch model. Our primary focus is on comparing JML and MML when the assumptions of MML are violated, that is the abilities are not sampled from the distribution that is assumed in the estimation.
Keywords
  • ConQuest software,
  • Item parameter recovery estimation,
  • ACER,
  • Testing,
  • Assessment,
  • Rasch model,
  • Estimation method
Publication Date
September, 2014
Citation Information
Luc T Le and Ray Adams. "Evaluation of item parameter recovery estimation by ACER ConQuest software" Paper presented at the European Conference on Educational Research (2014)
Available at: http://works.bepress.com/luc_le/31/