PT - JOURNAL ARTICLE AU - Brade, Raphael TI - Short-Term Events, Long-Term Friends? AID - 10.3368/jhr.1024-13917R1 DP - 2025 Apr 14 TA - Journal of Human Resources PG - 1024-13917R1 4099 - http://jhr.uwpress.org/content/early/2025/03/26/jhr.1024-13917R1.short 4100 - http://jhr.uwpress.org/content/early/2025/03/26/jhr.1024-13917R1.full AB - How does the formation of social connections at the beginning of college shape individuals’ subsequent academic performance? Exploiting quasi-random assignment to groups of a two-day freshman orientation program, I find that such brief social activities can be sufficient to generate lasting performance spillovers: being assigned to a peer group with one SD higher ability improves the academic performance of business administration students by 0.05 to 0.08 SD up to three years later. I provide evidence that the effects result from the formation of lasting social ties, and that performance spillovers are moderated by the broader social environment.