We use an RCT at an elite public university to evaluate whether undergraduate students in introductory economics courses could be nudged to pursue economics further. Two treatment arms provided information and framed the economics major as either having wide applicability or high financial returns. Both treatments nudged men to take more courses similarly, with no effects on women. Women with a lower-than-expected introductory course grade reduced course-taking in response to either treatment; men in this position were nudged to take more courses. Men with female TAs were also nudged to take more courses, while women were not.