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Principles and practice of on-demand testing
By Christopher Wheadon, Claire Whitehouse, Victoria Spalding, Kate Tremain, Melody Charman
Published 1 Jan 2009 -
The effect of sample size on item parameter estimation for the partial credit model
By Qingping He, Christopher Wheadon
Published 11 Dec 2008 -
Evaluation of the February 2008 confirmation method awarding trial
By Chloe Davenport
Published 1 May 2008