Pragmalinguistics ; Institutional communication ; Cross-cultural pragmatics; Pragmatics, cross-cultural; Pragmatik, interkulturelle; Intercultural communication ; E-Mail; Voice mail; Chat; Computer-mediated communication ; Comparison ; Second language acquisition (pragm.) ; Zweitspracherwerb (pragm.) ; Interactionist hypothesis (second language acquisition) ; Conversational analysis (second language acquisition) ; English (American) ; USA (English language in the) ; USA (engl. Sprache in den) ; English in the USA; Englisch in den USA; American English ; Spanish