Second language acquisition (language teaching) ; Zweitspracherwerb (Unterricht) ; Foreign language teaching ; Feedback (language teaching) ; Rückmeldung (Sprachunterricht) ; Lehrerkommentar; Teacher's comment; Correction (in language teaching) ; Lernmotivation; Affekt (Einfluss auf Zweitspracherwerb) ; Affect (influence on second language acquisition) ; Motivation research ; Glottodidaktik; Lehrforschung; Pädagogische Linguistik; Pedagogical linguistics; Language teaching research ; Lehrplan; Instructional advice ; Brain plasticity; Neuronal plasticity; Plasticity (neur.) ; Jugendliche (Sprachverhalten) ; Adolescents (language behavior) ; Jargon; Youth language ; Heterogenität (Sprachunterricht) ; Binnendifferenzierung (Sprachunterricht) ; Difference hypothesis ; 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)
