„While general aspects of maternal interaction behavior, such as the quantity and complexity of linguistic stimulation, are relevant in the earlier stages of vocabulary development, cognitively stimulating language input, as a more specific aspect of maternal input, is an important predictor in later stages of vocabulary development.“
Dr. Dave Möwisch u. a., Cognitively stimulating maternal language as predictor for vocabulary growth. In: Zeitschrift für Erziehungswissenschaft (2022), S. 21.