Frankreich: „The results suggest that the positive associations of crèche attendance with language development are particularly concentrated among disadvantaged children: those with less educated mothers, those living in lower income households, and those born to (first- or second-generation) immigrant mothers.“
Univ.-Prof. Dr. Lawrence M. Berger u. a., The Impact of Center-Based Childcare Attendance on early Child Development (2021), S. 26.