CupTalks Blog

How much do parents shape who children become? Twin and adoption studies suggest the shared family environment explains less than the nurture assumption predicts, while trials and adoption designs still find real effects of parenting on schooling, self-control and behavior. This article integrates behavioral and molecular genetics, gene–environment correlation, genetic nurture and family stress research. It argues that parenting matters conditionally and probabilistically, that genotype-based susceptibility claims remain unproven, and that policy must also address family hardship.