Membership categorization; Social representation; Category (ethnoling.) ; Cross-cultural pragmatics; Pragmatics, cross-cultural; Pragmatik, interkulturelle; Intercultural communication ; Self-disclosure; Self-presentation (communication research) ; Ethnizität und Sprache; Ethnicity and language; Language and ethnicity ; Identität und Sprache; Identity and language; Fremdheit und Sprache; Estrangement and language; Sprache und Integration; Integration und Sprache; Language and identity ; Japanese ; Korean