Erstspracherwerb; First language acquisition; Ontogenese; Language acquisition ; Syntactic development; Morphological development; Morphologie (Spracherwerb) ; Syntax (Spracherwerb) ; Grammatical development ; Phonemik (Spracherwerb) ; Phonetics (language acquisition) ; Kindersprache (phonet./phonem.) ; Child language (phonet./phonem.) ; Spracherwerb (phonet./phonem.) ; Language acquisition (phonet./phonem.) ; Phonological development ; Wortbedeutung (Spracherwerb) ; Bedeutungsentwicklung; Semantic development ; Spracherwerb und neurologische Entwicklung; Language acquisition and neurological development; Sprache und Denken (Ontogenese) ; Language and thought (ontogenesis) ; Cognitive development; Language acquisition and cognitive development ; Learnability (of language) ; Lernbarkeit (von Sprache) ; Spracherwerb (Theorie) ; Language acquisition (theory of) ; Poverty of the stimulus-argument; Theory (language acquisition) ; LAD; Spracherwerbsmechanismus ; Overgeneralization (language acquisition) ; Minimalist program; Generative theory of language ; English