Title

Using Rasch Measurement To Improve Analytical Marking Keys

Document Type

Journal Article

Publisher

NZCER Press

Faculty

Faculty of Education and Arts

School

School of Education/Centre for Schooling and Learning Technologies

RAS ID

18084

Comments

This article was originally published as: Tarricone, G. , & Cooper, M. G. (2014). Using Rasch measurement to improve analytical marking keys. Assessment Matters, 6(2014), 86-111. Original article available here

Abstract

This article describes the use of Rasch measurement to improve criteria-based analytical marking keys. The instruments and data described result from a research project which investigated the use and assessment of digital portfolios in the Western Australian senior secondary design course. The study involved two phases and two separate data sets. A criteria-based analytical marking key was used to score the portfolios in Phase 1, and a refined and improved version was used in Phase 2. Refinement of the criteria-based analytical marking key was undertaken as a result of Rasch analysis, and this is described and illustrated. Results showed that Rasch measurement can inform the improvement of marking keys in terms of criteria, targeting, number of score points, utilisation of score points, and item discrimination.

Share

Article Location

 
COinS