Language testing ; Evaluation criterion (language testing) ; Composition (teaching of) ; ESP; English for academic purposes; EAP ; Academic language; Scientific language ; Academic achievement; Language and intelligence ; Pathologische Sprachproduktion; Pathological language production; Speech production (pathol.) ; Zweitspracherwerb (Textproduktion) ; Second language acquisition (text production) ; Text production (second language acquisition) ; Evaluation criterion (text.) ; Südafrika (engl. Sprache in) ; South Africa (English language in) ; English in South Africa