Phylogenese; Biolinguistics ; Twin research ; Kindersprache (pathol.) ; Child language (pathol.) ; Specific language impairment; SLI; Dysgrammatismus (Kindersprache) ; Dysgrammatism (child language) ; Handicapped 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 ; Innate ideas hypothesis; Poverty of the stimulus-argument; Lernbarkeit (von Sprache) ; Learnability (of language) ; Nature/nurture; Logisches Problem (Spracherwerb) ; Logical problem (language acquisition) ; Nativist hypothesis
