ESP; English for academic purposes; EAP ; Academic language; Scientific language ; Academic achievement; Language and intelligence ; Text production ; Schreibperformanz; Written composition (research on) ; Sachtext; Scientific article; Sachbuch; Nonfiction; Technical discourse ; English (American) ; USA (English language in the) ; USA (engl. Sprache in den) ; English in the USA; Englisch in den USA; American English