同胞数量、出生顺序与儿童的家庭教育投入——基于CFPS2018数据的实证研究

Sibling Number,Birth Order and Family Education Investment:A Study Based on CFPS2018

本文利用2018年中国家庭追踪调查数据库(CFPS2018)的义务教育阶段儿童样本,考察了同胞数量、出生顺序和儿童所获得家庭教育投入间的关系。结果显示,虽然在家庭教育的经济与非经济投入上存在同胞稀释效应,但随着同胞数量的增加,该效应总体呈现出边际递减的趋势。特别是在非经济投入的亲子监督指标上,稀释效应遵循“阈值模式”,即只有当同胞数量达到某特定值时,稀释效应才会显现。此外,在经济投入的基本性教育支出指标上,同胞稀释效应在不同出生顺序样本上存在异质性,即年长子女更加受到同胞稀释效应的影响。本文为同胞稀释效应相关研究贡献了最新的证据,并从生育配套政策、公共教育政策以及家庭教育投入决策的视角给出了相关建议。

This study investigates the relationship between sibling number,birth order and family education investment by using the samples of children in compulsory education stage from China Family Panel Studies in 2018(CFPS2018).The results show that although there is a sibling dilution effect on the economic and non-economic investment of family education,the effect generally shows a marginal decreasing pattern with the increase of the number of siblings.Specifically,the dilution effect on the parent-child supervision index of non-economic investment follows a“threshold model,”where dilution effect only appears when the number of siblings reaches a certain value.Moreover,on the basic education expenditure index of economic investment,the sibling dilution effect is heterogeneous across different birth order samples,that is,older children are more likely to be affected by dilution.This paper contributes the latest evidence to the related research on sibling dilution effect and provides some relevant suggestions from the perspective of fertility supporting policy,public education policy and family education investment decision.