11.16 Tucker-Drob et al. (2011) conducted research that suggested there may be a relationship between ___ and heritability. Which of the following options most accurately fits the space?

Tucker-Drob et al. (2011) studied 750 twin pairs to examine the relationship between heritability and the socio-economic status (SES) of their parents. At ten months, there was little effect of SES. At two years, there was much more variation especially in twins with parents of high SES.