GERS; CEFR; Quadro Comune Europeo di Riferimento; Common European Framework of Reference for Languages ; Unterbrechung (Diskursanalyse) ; Interruption (conversational analysis) ; Dialogsteuerung; Alternation (pragm.) ; Sprecherwechsel ; Second language acquisition (psycholing.) ; Sprechtempo; Artikulationsgeschwindigkeit; Articulation rate; Dysdiadochokinesis (phonet.) ; Speech rate ; English