Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This paper discusses the formation of peers in an anonymous higher education setting using a unique data set of industrial engineering students. For identification, we exploit the random assignment of students into groups and student performance before students met. We compare two different settings for potential peer formation: a voluntary freshman orientation week organized by the students’ union and a mandatory group work course. It is only in the case of the group work course that we report persistent impacts on subsequent academic achievement. In line with our theoretical reasoning, peer effects exist between groups of two students who were already similar before.