Social Pain Minimization Mediates Discrimination's Effect on Sleep Health.

Objective: Discrimination disrupts sleep and contributes to race-based health inequities for Black Americans, but less is known about the psychological mechanisms underlying this relation. The current work tests whether emotion invalidation, termed Social Pain Minimization (SPM), mediates discrimination's negative effects on sleep quality. We focus on the experiences of Black Americans because of racism's disproportionate effect on the health outcomes of Black individuals in the U.S.

Methods: Four studies with cross-sectional (Studies 1a-1b) and cross-lagged panel designs (Studies 2-3; N_total = 1,176) were used. Discrimination and SPM were assessed with established measures and self-reported sleep quality was assessed with three different operationalizations including the short form Patient-Reported Outcomes Measurement Information System (PROMIS) Sleep-Related Impairment (SRI) subscale and composites of the Insomnia Severity Index (ISI).

Results: Cross-sectional (Studies 1a-1b) and longitudinal mediation analyses (Studies 2-3) indicated discrimination's negative effect on sleep quality partially operated through SPM (Study 1a, 95% CI = [-.24, -.016]); Study 1b, 95% CI = [-.22, -.03]; Study 2, 95% CI = [-.268, -.007]]; Study 3, 95% CI = [-0.043, -.002]).

Conclusion: Beyond its direct negative effect on sleep, discrimination also operates through SPM to reduce sleep quality. Emotion invalidation stemming from discrimination damages sleep.