Language testing ; Second language acquisition (language teaching) ; Zweitspracherwerb (Unterricht) ; Foreign language teaching ; DaF; Deutsch als Zweitsprache; German as a second language; DaZ; German as a foreign language ; ELE; Espaņol como segunda lengua; ELSE ; ILS ; English as a second language; ESL; TESOL ; Pragmatische Kompetenz; Pragmatic competence; Communicative competence ; Scalar implicature; Konventionelle Implikatur; Conventional implicature; Explicature; Presupposition (pragm.) ; Bitte; Request ; Thanks ; Excuse; Vergebung; Forgiveness; Ausrede; Subterfuge; Apology ; Flattering; Schmeicheln; Ingratiation; Compliments ; Second language acquisition (pragm.) ; Zweitspracherwerb (pragm.) ; Interactionist hypothesis (second language acquisition) ; Conversational analysis (second language acquisition) ; Modality ; German