Fertility Patterns of Child Migrants: Age at Migration and Ancestry in Comparative Perspective

This article examines the fertility of women who migrated as children to one of three OECD countries—Canada, the United Kingdom, and France—and how it differs from that of native-born women, by age at migration. By looking at child migrants whose fertility behavior is neither interrupted by the migration event nor confounded by selection, the authors obtain a unique perspective on the adaptation process as a mechanism that explains variation in observed foreign and native-born fertility differentials. The authors find patterns that are broadly consistent with the adaptation hypothesis—which posits that as migrants become accustomed to their host countries, their fertility norms begin to resemble those of the native population—and, on average, limited cross-national variation in fertility differentials. The effect of exposure to the host country, however, seems to vary by country of origin, a finding that underscores the importance of taking into account the heterogeneity of the foreign-born population.