Syntactic development; Morphological development; Morphologie (Spracherwerb) ; Syntax (Spracherwerb) ; Grammatical development ; Baby talk; Motherese; Child-directed speech; Ammensprache; Babysprache; Infant-directed speech; Fatherese; Language spoken to children ; Learnability (of language) ; Lernbarkeit (von Sprache) ; Spracherwerb (Theorie) ; Language acquisition (theory of) ; Poverty of the stimulus-argument; Theory (language acquisition) ; Multilingualism; Polylingualism; Plurilingualism ; Second language acquisition in children; Kindlicher Zweitspracherwerb; Child second language acquisition ; German
