A Robust Approach for Mapping Group Marks to Individual Marks Using Peer Assessment

Autor/inn/en	Spatar, Ciprian; Penna, Nigel; Mills, Henny; Kutija, Vedrana; Cooke, Martin
Titel	A Robust Approach for Mapping Group Marks to Individual Marks Using Peer Assessment
Quelle	In: Assessment & Evaluation in Higher Education, 40 (2015) 3, S.371-389 (19 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0260-2938
DOI	10.1080/02602938.2014.917270
Schlagwörter	Peer Evaluation; Group Activities; Grades (Scholastic); Methods; Robustness (Statistics); Undergraduate Students; Foreign Countries; Interrater Reliability; Computation; Singapore; United Kingdom (Newcastle upon Tyne) + Suchen Sie Ihr Suchwort? Gruppenaktivität; Notenspiegel; Method; Methode; Widerstandsfähigkeit; Ausland; Interrater-Reliabilität; Singapur
Abstract	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. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01