„The general assumption is that the home learning environment directly influences children’s competencies. […] The home learning environment (measured as home literacy, e.g. frequency of shared book reading, number of children’s books) is positively associated with children’s vocabulary at age three as well as to other emerging literacy skills at the end of preschool (e.g. grammar, knowledge of letters).“
Univ.-Prof. Dr. Katharina Kluczniok u. a., Relations between socio-economic risk factors, home learning environment and children’s language competencies. In: European Educational Research Journal 2019, Vol. 18(1), S. 87.