„In the early years of life parental investment and family environment are particularly consequential for cognitive development. Indeed, children’s brains are malleable and most receptive to external stimuli at the early stages. Hence, short and long run effects of social inequality in family environment and investment operating from birth up to the school entry contribute to the emergence of social inequality in children’s educational achievements already before school.“
Dr. Giampiero Passaretta u. a., Is Social Inequality in School-Age Achievement Generated before or during Schooling? A European Perspective. In: European Sociological Review, 2022, 38, S. 851.