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Full-Text Articles in Demography, Population, and Ecology
Poverty And Proximate Barriers To Learning: Vision Deficiencies, Vision Correction And Educational Outcomes In Rural Northwest China, Emily Hannum, Yuping Zhang
Poverty And Proximate Barriers To Learning: Vision Deficiencies, Vision Correction And Educational Outcomes In Rural Northwest China, Emily Hannum, Yuping Zhang
Emily C. Hannum
Few studies of educational barriers in developing countries have investigated the role of children’s vision problems, despite the self-evident challenge that poor vision poses to classroom learning and the potential for a simple ameliorative intervention. We address this gap with an analysis of two datasets from Gansu Province, a highly impoverished province in northwest China. One dataset is the Gansu Survey of Children and Families (GSCF, 2000 and 2004), a panel survey of 2,000 children in 100 rural villages; the other is the Gansu Vision Intervention Project (GVIP, 2004), a randomized trial involving 19,185 students in 165 schools in two …
Marriage And Divorce: Changes And Their Driving Forces, Betsey Stevenson, Justin Wolfers
Marriage And Divorce: Changes And Their Driving Forces, Betsey Stevenson, Justin Wolfers
Betsey A Stevenson
We document key facts about marriage and divorce, comparing trends through the past 150 years and outcomes across demographic groups and countries. While divorce rates have risen over the past 150 years, they have been falling for the past quarter century. Marriage rates have also been falling, but more strikingly, the importance of marriage at different points in the life cycle has changed, reflecting rising age at first marriage, rising divorce followed by high remarriage rates, and a combination of increased longevity with a declining age gap between husbands and wives. Cohabitation has also become increasingly important, emerging as a …