Testing the conditional resource-dilution hypothesis: the impact of sibship size and composition on infant and child mortality in the Netherlands, 1863–1910

Abstract

ABSTRACTChild survival depends on the allocation of resources within the household. The size and composition of the sibling set influences parental division of resources and can in turn affect survival chances. In spite of recent advances in research on sibling effects, previous studies have often used the resource dilution hypothesis, which neglects the specific historical context which shapes household structure and organisation. This study therefore focuses specifically on the variation in historical context by examining sibling effects on infant and child mortality in three regions of the Netherlands in the period 1863–1910. It does so by connecting the gendered and the conditional resource-dilution model with each other as a conceptual framework. Changing household composition is taken into account by using longitudinal data from the Historical Sample of the Netherlands, time-varying variables and Cox proportional-hazard models to study sibling size and composition. The results show that the number and gender of siblings play an important role in determining child mortality, but are less significant in determining infant mortality. The number of same-sex siblings has a negative impact on boys’ survival chances in the Netherlands, which suggests that after the age of one, boys experienced more competition from their brothers. The reason for this could be their assigned roles within the household and on the family farm. A negative influence of the number of sisters is only found for child mortality chances for girls in the nuclear northwest family region. Here, fewer children were needed to work inside or outside the household, and girls and boys may even have been interchangeable. The results underscore the importance of looking at the interaction between the specific historical context and gender when trying to understand how sibship size and composition influenced children’s mortality risks and shaped inequality within the household.