DaF; Deutsch als Zweitsprache; German as a second language; DaZ; German as a foreign language ; Proprioception; Propriozeption; Tiefenwahrnehmung; Interoception; Self-perception ; Pragmatische Kompetenz; Pragmatic competence; Communicative competence ; Metalinguistic awareness; Phonologische Bewusstheit; Phonological awareness; Focus on form (language teaching) ; Sprachbewusstsein; Linguistic awareness ; German ; Polish