Lexicon (mental) ; Logogenmodell; Lexicon (psycholing.) ; 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 ; Polysemie; Polysemy; Ambiguität (lex.) ; Ambiguity (lex.) ; Mutual exclusivity (semant.) ; Homonymy/Polysemy ; English