Applied linguistics ; Needs assessment (method.) ; Validity (method.) ; Evaluation criterion (method.) ; Hörersteuerung; Rückmeldesignal; Kontaktsignal; Aizuchi; Active listening; Back channel ; Follow-up (conversational analysis) ; Feedback (conversational analysis) ; Strategie (pragm.) ; Strategy (pragm.) ; Speaker strategy (pragm.) ; English (British) ; Grossbritannien (engl. Sprache in) ; Great Britain (English language in) ; Englisch in Grossbritannien; English in Great Britain; British English