@TechReport{iza:izadps:dp11024, author={Thiemann, Petra}, title={The Persistent Effects of Short-Term Peer Groups in Higher Education}, year={2017}, month={Sep}, institution={Institute of Labor Economics (IZA)}, address={Bonn}, type={IZA Discussion Paper}, number={11024}, url={https://www.iza.org/index.php/publications/dp11024}, abstract={This paper demonstrates that short-term peer exposure can generate achievement effects which persist for several months and years. I study a mandatory freshmen week for first-year undergraduates and exploit the random assignment of students to freshmen teams. I find that the freshmen week contributes to the formation of persistent social ties. Furthermore, peers' observable characteristics impact college achievement for up to three years. Ability peer effects are non-linear, i.e. very high or low levels of average peer ability in a group harm students' grades. These effects are most pronounced for low-ability students.}, keywords={peer effects;higher education;natural experiment;gender;region of origin;ability}, }