Gesture communication ; Pointing gesture ; Indexicals; Indexikalische Ausdrücke ; Spracherwerb (pragm.) ; Communicative competence (language acquisition) ; Kommunikative Kompetenz (Spracherwerb) ; Pragmatic competence (language acquisition) ; Pragmatische Kompetenz (Spracherwerb) ; Conversational analysis (language acquisition) ; Child language (conversational analysis) ; Kindersprache (pragm.) ; Conversational analysis (child language) ; Preverbal communication; Prespeech; Fötus (Sprachverständnis) ; Präverbale Kommunikation; Protolanguage (language acquisition) ; Prelexical period (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 ; Symbol (language acquisition) ; English (American) ; USA (English language in the) ; USA (engl. Sprache in den) ; English in the USA; Englisch in den USA; American English