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Marker effects and examination reliability: A comparative exploration from the perspectives of generalizability theory, Rasch modelling and multilevel modelling

Abstract:

This study looked at how three different analysis methods could help us to understand rater effects on exam reliability. The techniques we looked at were:

  • generalizability theory (G-theory)
  • item response theory (IRT): in particular the Many-Facets Partial Credit Rasch Model (MFRM)
  • multilevel modelling (MLM)

We used data from AS component papers in geography and psychology for 2009, 2010 and 2011 from Edexcel.

Publication status:
Published
Version:
Publisher's version

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Institution:
University of Oxford
Department:
Oxford, SSD, Education
Role:
Author
Publisher:
Office of Qualifications and Examinations Regulation Publisher's website
Chapter number:
Ofqual/13/5261
Publication date:
2013-01-01
URN:
uuid:1dd146f0-31ee-469f-af82-13ad7a674e8e
Source identifiers:
597725
Local pid:
pubs:597725

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