Lexicon (mental) ; Logogenmodell; Lexicon (psycholing.) ; Dual language acquisition; Bimodal language acquisition; Spracherwerb (biling.) ; Language acquisition (biling.) ; Bilingual language acquisition ; Zweisprachigkeit; Bilingualism ; Cross-linguistic influence (psycholing.) ; Language loss (biling.) ; Attrition (biling.) ; Language attrition (biling.) ; German ; French ; Italian