Small Family, Smart Family?
Small Family, Smart Family?
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DOI：
10.3368/jhr.45.1.33
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发表时间：
2007-08
期刊：
影响因子：
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通讯作者：
Sandra E. Black;P. Devereux;K. Salvanes
中科院分区：
文献类型：
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作者：
Sandra E. Black;P. Devereux;K. Salvanes
本文使用挪威的数据来估计家庭规模对男性智商分数的影响。工具变量（IV）估计使用性别组成作为一种工具没有显着的负面影响，家庭规模，但是，IV估计使用双胞胎意味着，家庭规模对智商分数有负面影响。我们的研究结果表明，家庭规模的影响取决于家庭规模的干预类型，并没有重要的负面影响，预期增加家庭规模。然而，双胞胎出生对家庭规模的意外冲击对现有儿童的智商分数有负面影响。
This paper uses Norwegian data to estimate the effect of family size on IQ scores of men. Instrumental variables (IV) estimates using sex composition as an instrument show no significant negative effect of family size; however, IV estimates using twins imply that family size has a negative effect on IQ scores. Our results suggest that the effect of family size depends on the type of family-size intervention and that there are no important negative effects of expected increases in family size. However, unexpected shocks to family size resulting from twin births have negative effects on the IQ scores of existing children.