Does Information Affect Homophily?

Working Paper: CEPR ID: DP17375

Authors: Yana Gallen; Melanie Wasserman

Abstract: It is common for mentorship programs to use race, gender, and nationality to match mentors and mentees. Despite the popularity of these programs, there is little evidence on whether mentees value mentors with shared traits. Using novel administrative data from an online college mentoring platform connecting students and alumni, we document that female students indeed disproportionately reach out to female mentors. We investigate whether female students make costly trade-offs in order to access a female mentor. By eliciting students’ preferences over mentor attributes, we find that female students are willing to trade off occupational match in order to access a female mentor. This willingness to pay for female mentors declines to zero when information on mentor quality is provided. The evidence suggests that female students use mentor gender to alleviate information problems, but do not derive direct utility from it. We discuss the implications of these results for the design of initiatives that match on shared traits.

Keywords: homophily; mentorship; preference elicitation; gender

JEL Codes: J16; J24; J71


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
provision of information (L86)preferences for same-gender mentors (C92)
absence of information (D83)willingness to pay for female mentors (I24)
information on mentor quality (L15)preference for same-gender mentors (C92)
preferences for same-gender mentors (C92)willingness to pay for same-gender mentors (I24)
mentor gender (C92)alleviate information problems (D83)

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