Health and Retirement Studies Series
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The international network of HRS sister studies has been a remarkable development. It has not been centrally managed or centrally funded; rather it has grown through the cooperative but fundamentally independent design and conduct of the many studies described in this section. The global need for longitudinal studies of aging is driven first and foremost by global aging – an ongoing demographic transformation affecting developed and less developed nations alike. The HRS model of a publicly available, multidisciplinary, longitudinal study of the older population has proved so valuable to scientific researchers and policy-makers facing the challenges of aging that it has become the dominant framework adopted in the proliferation of international sister studies (also see “Gateway to Global Aging Data”). The value of comparative work has encouraged the sister studies to harmonize content. The HRS is now the model for a growing network of harmonized...