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The Minorities&amp;rsquo; Diminished Return (MDR) theory is defined as systematically smaller effects of socioeconomic status (SES) on the health and well-being of minority groups when compared to Whites. To extend the existing literature on the MDR theory as applied to the change of mental well-being over time, we investigated Black-White differences in the effects of baseline education and income on subsequent changes in positive and negative affect over a ten-year period.

Education and Income Predict Future Emotional Well-Being of Whites but Not Blacks: A Ten-Year Cohort