Simulation theory; Theory theory; Other minds ; Kindersprache (pathol.) ; Child language (pathol.) ; Specific language impairment; SLI; Dysgrammatismus (Kindersprache) ; Dysgrammatism (child language) ; Handicapped language acquisition ; Spracherwerb und neurologische Entwicklung; Language acquisition and neurological development; Sprache und Denken (Ontogenese) ; Language and thought (ontogenesis) ; Cognitive development; Language acquisition and cognitive development ; Auditory brainstem implant; Elektrisch-akustische Stimulation; Electric-acoustic stimulation; Cochlear implant ; Taubheit; Deafness