“…Our perspective on the role of gene-environment interactions is thus in the spirit of a social control mechanism, according to which genetic influences are mediated by structural constraints, societal contexts, norms, and -more broadly -culture (Shanahan and Hofer, 2005;Guiso et al, 2006;Bisin and Verdier, 2011;Boelmann et al, 2021). Social norms, such as those shaped by the pill revolution, are expected to channel genetic influences into fertility behavior, either magnifying or mitigating their impacts on outcomes.…”