Erstspracherwerb; First language acquisition; Ontogenese; Language acquisition ; Dual language acquisition; Bimodal language acquisition; Spracherwerb (biling.) ; Language acquisition (biling.) ; Bilingual language acquisition ; Audiometrie; Audiometry; Auditory screening; Hearing screening; Otoakustische Emissionen; Otoacoustic emssions; Auditory comprehension test ; English ; Spanish
