Table 2 Mentorship stories.

Illustrative examples of participants’ open-ended descriptions of their most meaningful mentor relationships during college.

Control condition
Black woman (from main text)I wouldn’t say I received any mentorship at [school] - not for lack of interested professors, but I didn’t really seek it.
Black manAs a student who spend most of my life living abroad, having a freshman counselor who understood the challenges
associated with adjusting to life both from a social aspect and an academic aspect in the US was key. He helped to
me to see and adjust to new ways of thinking about problems, skills that I will need moving forward.
Black manI don’t think I necessarily had a mentor-mentee relationship with anyone at [school]. I definitely looked up to and
sought out advice from older brothers in my fraternity, but it wasn’t until having graduated from [school] that I
realized the importance of meaningful mentorship relationships.
White womanI had a very deep relationship with my senior thesis adviser. One summer, while I was doing an internship in Greece in
a field related to my studies, my mentor came to visit me all the way from the United States. Given his old age, I
think this was a true sign of how much he cared. He always took interest in how am I balancing academia and
athletics and took an effort to get to know me personally.
White manMy senior year I had been struggling with some personal issues. The Dean of my college took a personal interest in my
predicament and was very supportive. He provided academic advice and post-graduate employment assistance.
White manA lot of professors, one in particular, influenced the way I thought. They made me smarter and they helped me write
well. I loved the material, though, not the professors, and I left [school] without mentors.
Social-belonging treatment condition
Black man (from main text)The first semester of my freshman year was very difficult for me. I was struggling academically, didn’t feel like I fit in,
and was unhappy with my major. I really did not feel like I belonged at [school]. At the halfway point in that
semester I was totally miserable. Around that time, I began to spend more time speaking with my freshman
counselor. We really bonded, and she helped me to realize that I did belong at [school]. Thanks to her, I was able to
connect better with my peers and perform better academically. We’ve kept in touch ever since.
Black manI had several professors with whom I had either taken multiple classes and/or worked on independent projects. Those
professors offered me advice on academic and professional development at and after [school] and continue to be in
touch with me. I met with the on various occasions during my senior year to talk about my life and my interests.
Since graduating from [school], I returned one year later to meet with those professors individually to help decide
potential next steps for myself. I was uncertain whether I wanted to pursue [career], [career], [career], or [career] as a
career. My professor mentors not only spoke with me in person when I visited [location of school] but also put me in
connect with other people.
Black womanOne of my most powerful mentors was professor in [my major] department. For some reason, he took a particular
interest in me and we met often informally for lunch to talk about kinds of things -- current events, my career and of
course my research. We stayed in touch (though I should e-mail him more) and he ended up writing me a rec for
grad school several years after I graduated.
Black womanOne of the most meaningful mentorships came from my Math professor. I started in basic mathematics, but was
interested in [other related discipline]. However, on the first math mid-term, I almost failed the test. I went to speak
to the professor and, when he learned I wanted to be an engineer, he said “well, basic calculus is the foundation of
all engineering, so you’d better shape up”, or something like that. It actually really discouraged me at first. But, then I
spoke with my mom and realized that I just needed to get back to basics. I started going to math tutor sessions…
and also bought a basic geometry/trig book to help me remember the basics. In fact, the next two mid-terms, I
scored the 3rd or 4th highest in the class and ended up acing calculus. Along the way, the professor saw my
improvement and started mentoring me. He and I would talk after class, not just about the class, but more about
life, in general, and my interest in engineering, specifically. He helped me tremendously and we stayed in touch,
even as I left his class in the Spring. He nominated me for a scholarship and in general kept in touch with me
throughout the next year, until he retired.
White manMy professor, [name], has stayed in touch with me since I graduated and has helped me connect to various health
policy experts….However, I wouldn’t say that I had one specific mentor who worked with me throughout all four
years, but rather a series of professors who helped connect me to new resources….I had good relationships with
several professors who offered several different pieces of advice that has helped me in my career.
White womanI had a very good relationship with my college dean. He was easy-going and always available to chat if needed.
Additionally, he remained objective when listening to questions/concerns. He made me feel important in the
[school] community and also supported.