Netz (semant.) ; Net (semant.) ; Semantic net ; Category (theory of grammar) ; Basic level concept; Category (psycholing.) ; Erstspracherwerb; First language acquisition; Ontogenese; Language acquisition ; 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) ; English ; French ; Spanish