Behrman J R
J Dev Econ. 1988 Feb;28(1):43-62. doi: 10.1016/0304-3878(88)90013-2.
"Nutrients available to children are determined largely by intrahousehold allocations. There are a number of reasons why birth order may affect these allocations. A model is developed to estimate critical parameters of parental preferences regarding the allocation of nutrients among their children. Latent variable estimates for rural south India indicate that parental preferences have productivity-equity tradeoffs and parents favor older children. The productivity-equity tradeoff, however, is much less for the lean season. Therefore, when food is scarcest, parents follow more closely a pure investment strategy, exposing their more vulnerable children to greater malnutrition risk."
儿童可获得的营养物质在很大程度上取决于家庭内部的分配。出生顺序可能影响这些分配有多种原因。构建了一个模型来估计父母在子女间营养分配偏好的关键参数。印度南部农村地区的潜在变量估计表明,父母的偏好存在生产率与公平之间的权衡,且父母更偏爱年长的孩子。然而,在青黄不接的季节,生产率与公平之间的权衡要小得多。因此,在食物最为匮乏的时候,父母更严格地遵循纯粹的投资策略,使他们较易受影响的孩子面临更大的营养不良风险。