摘要
高出生性别比常常发生在亚洲的人口中。李南等曾经对此给出了一个定量的人口解释，即生育率下降增加了性别选择压力，而且在强烈的男孩偏好下，会发生性别选择的男孩。本文的目的在于分析如果生育率维持在一个低水平上，出生性别比会怎样变化。利用卡瓦里（ＣａｖａｌｌｉＳｆｏｒｚａ） 和费尔德曼（ Ｍａｒｃｕｓ Ｗ．Ｆｅｌｄｍａｎ） 的文化传播模型来综合分析男孩偏好这个特定的文化特征和人口中出生性别比的动态演化。以中国一个农村地区为例，讨论了基于经济因素的文化传播机制。
Remarkably high sex ratios at birth have been observed recently in Asian populations.A quantitative demographic explanation of this has been given by Li et al.(1997).In brief,fertility decline elevates the sex\|selection pressure,and in the presence of strong son preference,the result is sex selection of sons.The purpose of this paper is to predict what may happen to the sex ratio at birth if fertility is maintained at a low level.We do this with a model of cultural transmission which links the evolution of a specific cultural trait,son preference,and the sex ratio at birth in a population.We also discuss a transmission mechanism,based on economic considerations,using a rural area of China as an example.
出处
《人口与经济》
CSSCI
北大核心
1999年第S1期27-34,共8页
Population & Economics
