„Child development, in particular language development, is associated with family background, e.g., educational level. […] A large amount of research, especially from the U.S., examined the detrimental impact of poverty on child outcomes showing that children living in poverty are negatively affected in their health, cognitive, language, and socio-emotional development as well as in their school achievement, and their later educational attainment compared to their peers who do not experience poverty.”
Dr. Claudia Karwath u. a., Does Poverty Affect Early Language in 2-year-old Children in Germany?. In: Journal of Child and Family Studies (2022), S. 1.