Abstraction (psycholing.) ; Generalization (psycholing.) ; Word frequency effect (psycholing.) ; Versprecherhäufigkeit; Speech error rate; Frequency (psycholing.) ; Articulation (child language) ; Pathologischer Spracherwerb (phon.) ; Phonological development (pathol.) ; Critical period (language acquisition) ; Alter (Einfluss auf Spracherwerb) ; Age (influence on language acquisition) ; Age of acquisition; AoA; Sensitive period (language acquisition) ; Screening (speech therapy) ; Assessment criterion (speech therapy) ; Language intervention; Children (speech therapy with) ; Speech therapy for children ; English (American) ; USA (English language in the) ; USA (engl. Sprache in den) ; English in the USA; Englisch in den USA; American English