International migration, transfers of norms and home country fertility

"This paper examines the relationship between international migration and source country fertility. The impact of international migration on source country fertility may have a number of causes, including a transfer of destination countries' fertility norms and an incentive to acquire more education. It provides provide a rigorous test of the diffusion on of fertility norms using original and detailed data on migration. The results provide evidence of a significant transfer of fertility norms from migrants to their country of origin: a one percent decrease in the fertility norm to which migrants are exposed reduces home country fertility by about 0.3 percent for origin countries. "--World Bank web site