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Teachers' estimates of candidates' grades: Curriculum 2000 Advanced Level Qualifications
By Debra Dhillon Published 19 Oct 2010
Principles and practice of on-demand testing
By Christopher Wheadon, Claire Whitehouse, Victoria Spalding, Kate Tremain, Melody Charman Published 1 Jan 2009
Predictive models of question difficulty - A critical review of the literature
By Debra Dhillon Published 1 Feb 2003