The impact of a rubric and friendship on peer assessment: Effects on construct validity,performance, and perceptions of fairness and comfort |
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| Authors: | Ernesto Panadero Margarida Romero Jan-Willem Strijbos |
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| Institution: | 1. Department of Educational Sciences and Teacher Education. Learning and Educational Technology Research Unit (LET), University of Oulu, Finland;2. Departament de Psicologia Bàsica, Evolutiva i de l’ Educació, University Autònoma de Barcelona, Barcelona, Spain;3. Department of Psychology, Ludwig-Maximilians-University, Munich, Germany |
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| Abstract: | Construct validity of peer assessment (PA) is important for PA application, yet difficult to achieve. The present study investigated the impact of an assessment rubric and friendship between the assessor and assessee on construct validity of PA. Two-hundred nine bachelor students participated: half of them assessed a peer's concept map with a rubric whereas the other half did not use a rubric. The results revealed a substantial reliability and construct validity for PA. All students over-score their peers’ performance, but students using a rubric were more valid. Moreover, when using a rubric a high level of friendship between assessor and assessee resulted in more over-scoring. Use of a rubric resulted in higher quality concept maps for peer and expert ratings. |
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| Keywords: | Peer assessment Reliability Construct validity Rubric Friendship |
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