Abstraction (language acquisition) ; Generalization (language acquisition) ; Kindersprache (pathol.) ; Child language (pathol.) ; Specific language impairment; SLI; Dysgrammatismus (Kindersprache) ; Dysgrammatism (child language) ; Handicapped language acquisition ; Overgeneralization (language acquisition) ; Youth language (pathol.) ; Pathologische Sprachproduktion; Pathological language production; Speech production (pathol.) ; Language intervention; Children (speech therapy with) ; Speech therapy for children ; Canada (English language in) ; Kanada (engl. Sprache in) ; English in Canada