Fig. 1: Participants’ confidence in engineering from college entry through one year post-graduation.

Depicts differences between intervention conditions (no mentor, male mentor, female mentor) in participants’ average change in confidence in their engineering abilities over five years, relative to their confidence levels at the beginning of college, before mentors were assigned. Error bars designate +/−1 standard error of each condition’s estimated mean confidence levels at that time-point. N = 150 participants.