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An Item Response Theory approach to the maintenance of standards in public examinations in England
By Christopher Wheadon
Published 28 Mar 2011 -
It's a long, long time from November to June
By Christopher Wheadon
Published 1 Jun 2009 -
By Christopher Wheadon
Published 1 Jun 2009 -
Principles and practice of on-demand testing
By Christopher Wheadon, Claire Whitehouse, Victoria Spalding, Kate Tremain, Melody Charman
Published 1 Jan 2009