A Brief Pro-Diversity Social Marketing Intervention Improves Grades and Well-Being of Students From Marginalized Groups.

Despite much research on improving intergroup relations, the evidence for long-term effects in real-world settings is mixed. We used the social marketing approach to create an "Inclusivity Page" that could be added to course syllabi. The page contained three targeted pro-diversity messages based on social norms, personal benefits, and concrete behavioral recommendations. We tested our intervention in a large randomized controlled trial in university classrooms (N_students = 1,799). We obtained students' course grades and overall college GPAs several years later. A subset of students also completed an outcome survey three months after the intervention. Students from underrepresented racial groups exposed to the intervention early in college had better course grades and GPAs. We also observed an enhanced sense of belonging and better emotional and physical health among students from all marginalized groups. Our research demonstrates the utility of employing a targeted approach to improve experiences of members of marginalized groups.