The technique of Adaptive Comparative Judgement is an alternative to marking.
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The science of comparative judgement began with Louis Leon Thurstone of the University of Chicago.
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This being the case, it is impossible to make comparative judgements about statements made according to each worldview.
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Comparative judgement replaced their existing method which required direct judgement of a script against the official standard of a different board.
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If we examine the complaints made by Barnett, we cannot fail to be struck by the fact that they contain no comparative judgement.
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Pollitt then introduced Comparative Judgement to the UK awarding bodies, as a method for comparing the standards of A Levels from different boards.
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The real appeal of Adaptive Comparative Judgement lies in how it can re-professionalise the activity of assessment and how it can re-integrate assessment with learning.
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In each paper the aim was to convince the assessment community that there were significant advantages to using Comparative Judgement in place of marking for some types of assessment.
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This resulted in 250 performance portfolios on a website that were then assessed using an Adaptive comparative judgement assessment methodology based on work by Thurstone and the Law of comparative judgment.
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More developed methodologies include Choice Modelling or Maximum Difference methods, the latter being related to the Rasch model due to the connection between Thurstone's law of comparative judgement and the Rasch model.