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ERIC Number: EJ1054089
Record Type: Journal
Publication Date: 2015
Pages: 19
Abstractor: As Provided
ISSN: ISSN-0260-2938
A Robust Approach for Mapping Group Marks to Individual Marks Using Peer Assessment
Spatar, Ciprian; Penna, Nigel; Mills, Henny; Kutija, Vedrana; Cooke, Martin
Assessment & Evaluation in Higher Education, v40 n3 p371-389 2015
Group work can form a substantial component of degree programme assessments. To satisfy institutional and student expectations, students must often be assigned individual marks for their contributions to the group project, typically by mapping a single holistic group mark to individual marks using peer assessment scores. Since the early 1990s, various mapping methods that use self- and peer ratings have been developed. They are based on (normalised) individual weighting factors, partial scaling of the group mark, inter-rater agreement corrections or parabolic functions. We show that no single existing method can be successfully applied to most practical peer assessment scenarios such as different marking scale interpretations, intra-group ranking errors, biased free-riders and marks exceeding 100%. We present a combined analytical mapping method that incorporates the benefits of existing mechanisms, but alleviates their weaknesses with minimum computational effort and tutor input. The robustness of the method is illustrated through problematic assessment examples and empirically evaluated in multiple group work environments involving a total of 243 students and five different disciplines.
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Singapore; United Kingdom (Newcastle upon Tyne)
Grant or Contract Numbers: N/A