„Gaps in learning between children from high and low socio-economic status families emerge early. Significant development disparities have been found among infants at 18 months of age. By 24 months, these development disparities have been found to be equivalent to 6 months of development. […] Mother‘s education levels, for example, have been shown to have a greater impact on children‘s outcomes than children‘s participation in ECEC, potentially being indicative of the quality of the home learning environment.“
Rowena Phair, MA, International Early Learning and Child Well-being Study. Assessment Framework (2021), S. 22.