Son-biased sex ratios in the 2000 United States Census

被引：114

作者：

Almond, Douglas ^{[1
,2
]}

Edlund, Lena ^{[1
]}

机构：

[1] Columbia Univ, Dept Econ, New York, NY 10025 USA

[2] Natl Bur Econ Res, Cambridge, MA 02138 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2008年 / 105卷 / 15期

关键词：

sex-selective abortion; son preference;

D O I：

10.1073/pnas.0800703105

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We document male-biased sex ratios among U.S.-born children of Chinese, Korean, and Asian Indian parents in the 2000 U.S. Census. This male bias is particularly evident for third children: if there was no previous son, sons outnumbered daughters by 50%. By contrast, the sex ratios of eldest and younger children with an older brother were both within the range of the biologically normal, as were White offspring sex ratios (irrespective of the elder siblings' sex). We interpret the found deviation in favor of sons to be evidence of sex selection, most likely at the prenatal stage.

引用

页码：5681 / 5682

页数：2

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