Self-knowledge; Selbsterkenntnis; Self concept ; Communication research ; Ethnopragmatik; Ethnopragmatics; Culture-specific communication ; Speech anxiety; Receiver apprehension; Communication apprehension ; Soziokognition; Social cognition; Discursive psychology; Social psychology ; Language and sex; Gender studies; Metrosexuality; Language and gender ; Ethnizität und Sprache; Ethnicity and language; Language and ethnicity