Detecting Gender Bias in Peer Marking of Students’ Group Process Work

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Abstract
Concerns relating to the reliability of teacher and student peer assessments are discussed, and some correlational analyses comparing student and teacher marks described. The benefits of the use of multiple ratings are elaborated. The distinction between gender differences and gender bias is drawn, and some studies which have reported gender bias are reviewed. The issue of ‘blind marking’ is addressed. A technique for detecting gender bias in cases where student raters have awarded marks to same and opposite sex peers is described, and illustrated by data from two case studies. Effect sizes were found to be very small, indicating an absence of gender bias in these two cases. Results are discussed in relation to task and other contextual variables. The authors conclude that the technique described can contribute to the good practice necessary to ensure the success of peer assessment in terms of pedagogical benefits and reliable and fair marking outcomes.

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