„Language-stimulating interaction behavior has been shown to differ according to the families’ education level. In particular, the amount of talking as well as the qualitative and interactive aspects of mothers’ speech differ according to her education level. Higher educated mothers talk more to their children and their language input to their children is suggested to be more supportive for language development compared to less educated mothers.“
Dr. Anja Linberg u. a., Social disparities in the vocabulary of 2-year-old children and the mediating effect of language-stimulating interaction behavior (2020), S. 17.