Research Article Open Access

A Primer on the One-Parameter Rasch Model

Randy McCamey1
  • 1 Tarleton State Universit, United States

Abstract

The Rasch measurement model improves on traditional test construction by creating tests in which the person’s ability is independent of the sample of items used and the norm group used to calibrate the test. This article is an introductory review of the Rasch Model and describes properties of the Item Characteristic Curve (ICC) and discusses the utility of having person ability and item difficulty on a common scale.

American Journal of Economics and Business Administration
Volume 6 No. 4, 2014, 159-163

DOI: https://doi.org/10.3844/ajebasp.2014.159.163

Submitted On: 9 June 2014 Published On: 5 January 2015

How to Cite: McCamey, R. (2014). A Primer on the One-Parameter Rasch Model. American Journal of Economics and Business Administration, 6(4), 159-163. https://doi.org/10.3844/ajebasp.2014.159.163

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Keywords

  • Item Response Theory
  • Rasch
  • Test Construction
  • Item Difficulty