The social roots of student mental health: Organizational opportunity structures, social capital, and loneliness

Background Individual and clinical approaches to student mental health can obscure the role of universities as social environments. Within a social-capital framework, we examine whether loneliness links peer integration and student–faculty relationship quality to later psychological distress. Methods Three waves of the German National Educational Panel Study (NEPS SC5; N = 3,014 enrolled students) linked relationship measures (2012) to loneliness (2013/2014) and psychological distress measured with the CDC Healthy Days instrument (2016). Indirect associations were estimated using OLS-based mediation models with 5,000 bootstrap resamples, controlling for gender and age. Organizational opportunity structures are theorized but not measured. Results Higher peer integration and student–faculty relationship quality were associated with lower loneliness. Peer integration was associated with lower distress directly ( B = −0.40, p < .01) and indirectly through loneliness ( B = −0.22, 95% CI [−0.29, −0.15]); the indirect association represented 35.3% of the total association. Student–faculty relationship quality had no significant total or direct association with distress but showed a significant indirect association through loneliness ( B = −0.15, 95% CI [−0.22, −0.08]). Conclusions The findings are consistent with loneliness as a pathway connecting social relationships to later psychological distress. The faculty measure is considered in light of linking social capital, while the items primarily describe perceived relationship quality. Organizational opportunities for social connection provide a theoretical extension that requires direct testing.