Acceptability ; Stem completion; Wortergänzungsaufgabe ; Speech perception (biling.) ; Sprachperzeption (biling.) ; Bilingual speech production/perception; Zweisprachige Sprachproduktion/Sprachperzeption; Language processing (biling.) ; Sprachverständnis (biling.) ; Speech production/speech perception (biling.) ; Transfer (second language acquisition) ; Transfer (Zweitspracherwerb) ; Cross-linguistic influence (second language acquisition) ; Interference (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) ; Processability theory; Language comprehension (second language acquisition) ; Acceptability (second language acquisition) ; Übertragungsmerkmal; Transfer (semant.) ; Feature transfer; Interference (semant.) ; Interference (synt.) ; Topic drop; Diskursbindung; Discourse linking; Discourse topic ; Null object; Objectless clause ; Clitics ; Latin America (Spanish language in) ; Lateinamerika (span. Sprache in) ; Spanish in Latin America ; Mandarin; Kantonesisch; Cantonese; Putonghua; Sinitic; Hakka; Yue; Chinese