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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

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Understanding Rasch Measurement: Distractors with Information in Multiple Choice Items: A Rationale Based on the Rasch Model
Peer reviewed Peer reviewed
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Andrich, David; Styles, Irene – Journal of Applied Measurement, 2011
There is a substantial literature on attempts to obtain information on the proficiency of respondents from distractors in multiple choice items. Information in a distractor implies that a person who chooses that distractor has greater proficiency than if the person chose another distractor with no information. A further implication is that the…
Descriptors: Multiple Choice Tests, Testing, Item Response Theory
Conditional Pairwise Estimation in the Rasch Model for Ordered Response Categories Using Principal Components.
Peer reviewed Peer reviewed
Andrich, David; Luo, Guanzhong – Journal of Applied Measurement, 2003
Developed a method for conditional pairwise estimation in the Rasch model for ordered response categories using principal components analysis and evaluated the procedure through a simulation study. Results show that the quality of the estimates is excellent. (SLD)
Descriptors: Estimation (Mathematics), Factor Analysis, Item Response Theory, Simulation
Understanding Rasch Measurement: Understanding Resistance to the Data-model Relationship in Rasch's Paradigm: A Reflection for the Next Generation.
Peer reviewed Peer reviewed
Andrich, David – Journal of Applied Measurement, 2002
Reflects on the development of the unidimensional Rasch model for ordered categories and the resistance to some of its initially counterintuitive implications, especially that the thresholds that partition the continuum to form the ordered categories can show an empirical problem with the data. (SLD)
Descriptors: Data Analysis, Item Response Theory, Models