Marker effects and examination reliability: a comparative exploration from the perspectives of generalizability theory, Rasch modelling and multilevel modelling
Jo‐Anne Baird; Malcolm Hayes; Rod Johnson; Sandra Johnson; Iasonas Lamprianou; Ivor W. Molenaar
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.
Jo‐Anne Baird, Malcolm Hayes, Rod Johnson, Sandra Johnson, Iasonas Lamprianou, & Ivor W. Molenaar (2013). Marker effects and examination reliability: a comparative exploration from the perspectives of generalizability theory, Rasch modelling and multilevel modelling. Digital Education Resource Archive (University College London).