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Escape Comparative Pairs

An important element in the e-scape system involved the use of ‘comparative pairs’ (also called ‘comparative judgements’) as a methodology. The e-scape system allowed for pairs to be generated for comparison based on mathematical principles that produce a rank order of candidates in a way that is effective and reliable. The e-scape system allowed this to be on screen.

Interview notes of Prof. R Kimbell and Tony Wheeler of Goldsmiths University are available in the Teachers TV programme School Matters – E-assessment – Where Next?. The notes explore the use of the comparative pairs method based on e-scape experience with Design and Technology assessment trials.

Links

Could Comparative Judgements Of Script Quality Replace Traditional Marking And Improve The Validity Of Exam Questions? – Cambridge assessment: a paper from 2004 on the validity of comparative pairs as an assessment process.

The law of comparative judgement: Wikipedia – a description and explanation of the principles that underlie the comparative pairs marking process.

The Rasch model: Wikipedia – the rationale that underpins using the comparative pairs method of assessment, expressed in the language of statistics.

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