Formal and informal membership criteria exclude women, and women's costs of participation are often higher than for men. Social roles and the division of labor in Pakistan. Results suggest the presence of returns to individual specialization in all farm, non-farm, and home based activities. The intrahousehold division of labor is influenced by comparative advantage based on human capital and by long-lasting returns to learning by doing, but we also find evidence of a separate effect of gender and family status. Households seem to operate as hierarchies with sexually segregated spheres of activity.
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