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The value of a peer

Ingo Isphording () and Ulf Zölitz

No 342, ECON - Working Papers from Department of Economics - University of Zurich

Abstract: This paper introduces peer value-added, a new approach to quantify the total contribution of an individual peer to student performance. Peer value-added captures social spillovers irrespective of whether they are generated by observable or unobservable peer characteristics. Using data with repeated random assignment to university sections, we find that students significantly differ in their peer value-added. Peer value-added is a good out-of-sample predictor of performance spillovers in newly assigned student-peer pairs. Yet, students’ own past performance and other observable characteristics are poor predictors of peer value-added. Peer value-added increases after exposure to better peers, and valuable peers are substitutes for low-quality teachers.

Keywords: Peer effects; peer value-added; peer capital; spillovers (search for similar items in EconPapers)
JEL-codes: I21 I24 J24 (search for similar items in EconPapers)
Date: 2020-03
New Economics Papers: this item is included in nep-hrm, nep-net and nep-ure
References: View references in EconPapers View complete reference list from CitEc
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