English as a second language; ESL; TESOL ; Glottodidaktik; Lehrforschung; Pädagogische Linguistik; Pedagogical linguistics; Language teaching research ; Auswanderer; Emigrants; Migrant; Aussiedler; Gastarbeiter; Arbeitsmigranten; Immigrants/Emigrants ; Bilingual education ; Schwierigkeit (Zweitspracherwerb) ; Difficulty (second language acquisition) ; Complexity (second language acquisition) ; Critical period (second language acquisition) ; Alter (Einfluss auf Zweitspracherwerb) ; Age (influence on second language acquisition) ; Ultimate attainment (second language acquisition) ; Near-native competence (second language acquisition) ; AoA; Age of acquisition (second language acquisition) ; Sensitive period (second language acquisition) ; English (British) ; Grossbritannien (engl. Sprache in) ; Great Britain (English language in) ; Englisch in Grossbritannien; English in Great Britain; British English
