Research library

Browse and search the library of research carried out by the Centre for Education Research and Practice, covering a wide range of topics across education and assessment.

  1. Principles and practice of on-demand testing

    Christopher Wheadon, Claire Whitehouse, Victoria Spalding, Kate Tremain and Melody Charman

    This research was commissioned by Ofqual to review how advances in computer technology were enabling on-demand testing in the UK and to consider the implications of these advances for high stakes general qualifications....

  2. The effect of sample size on item parameter estimation for the partial credit model

    Qingping He and Christopher Wheadon

    Item Response Theory (IRT) models have been widely used to analyse test data and develop IRT-based tests. An important requirement in applying IRT models is the stability and accuracy of model parameters....

  3. Awarding objective test papers: is there a correct answer?

    Lesley Meyer

    In AQA, Objective Tests (OTs) have, in GCSEs generally, historically been awarded via a process known as 'back calculation' from other components. More recently, other methods such as Angoff (GCE) and KS3 predicted outcomes/IRT (GCSE Science) have also been employed....

  4. Contemporary validity theory and the assessment context in England

    Neil Stringer

    The concept of validity developed considerably during the last half of the twentieth century, from essentially meaning that 'a test measures what it says it measures', through multiple types of validity - content, criterion, and construct - to a multifaceted but essentially unitary concept of constr...

  5. Item banking with a test construction interface: An evaluation of a prototype

    Claire Whitehouse, Qingping He and Christopher Wheadon

    A prototype item bank/test construction interface was developed and evaluated within the Research and Policy Analysis department to assess how alterations to the current question paper setting process brought about by item banking may impact on the quality of tests....

  6. An evaluation of a prototype feedback tool for teachers

    Victoria Spalding

    This project explored some analysis options AQA can pursue in repackaging the items retired from an item-bank. Past paper analysis will be made redundant when on-demand testing is implemented in 2015. Item analysis tools could be provided to teachers to act as a replacement....

  7. Online standardisation trial, Winter 2008: Evaluation of examiner performance and examiner satisfaction

    Lucy Billington and Chloe Davenport

    In January 2008, online standardisation was trialled for the second time across six components. Half of the components were marked conventionally and half at item level and onscreen using CMI+....

  8. Measuring trust in the examination system: some insights from the medical profession and elsewhere

    Lucy Billington

    If the examination system is to maintain its credibility within society, it is imperative that awarding bodies and their regulator make efforts to understand, measure, and engender public trust....