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Establishment of the Panel Study of Income Dynamics and Child Development Supplement.

As the largest and longest-ever longitudinal, genealogically based study of the US population, the PSID (housed at ISR and initiated in 1968) is one of the original population-level assessments of health in the contexts of social determinants. The addition of the Child Development Supplement substantially expanded the health-focused measures of the PSID effort and set the stage for biomarker-focused research combined with intensive survey data collection that has now become its hallmark.