人类的不育率大约是5％。

Home and Parenting Resources Available to Siblings Depending on Their Birth Intention Status

Authors: Barber, Jennifer S.1; East, Patricia L.2

Source: Child Development, Volume 80, Number 3, May/June 2009 , pp. 921-939(19)

Abstract:
This study examines the differential availability of family and parenting resources to children depending on their birth planning status. The National Longitudinal Survey of Youth data were analyzed, 3,134 mothers and their 5,890 children (M =  7.1 years, range = 1 month-14.8 years), of whom 63% were intended at conception, 27% were mistimed, and 10% were unwanted. Fixed-effects models show that unwanted and mistimed children had fewer resources than intended siblings. Parents' emotional resources to older children decreased after the birth of a mistimed sibling. Findings suggest that cognitive and emotional resources are differentially available to children within a family depending on intention status and that unintended births lead to decreased parental resources for older children in the household.

Document Type: Research article

DOI: 10.1111/j.1467-8624.2009.01306.x

Affiliations: 1: University of Michigan 2: University of California, San Diego