Simulation theory; Theory theory; Other minds ; Spracherwerb (pragm.) ; Communicative competence (language acquisition) ; Kommunikative Kompetenz (Spracherwerb) ; Pragmatic competence (language acquisition) ; Pragmatische Kompetenz (Spracherwerb) ; Conversational analysis (language acquisition) ; 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 ; Dual language acquisition; Bimodal language acquisition; Spracherwerb (biling.) ; Language acquisition (biling.) ; Bilingual language acquisition