Probe-Goal-Agreement; Agreement (gramm.) ; Erstspracherwerb; First language acquisition; Ontogenese; Language acquisition ; Syntactic development; Morphological development; Morphologie (Spracherwerb) ; Syntax (Spracherwerb) ; Grammatical development ; Kindersprache (pathol.) ; Child language (pathol.) ; Specific language impairment; SLI; Dysgrammatismus (Kindersprache) ; Dysgrammatism (child language) ; Handicapped language acquisition ; Language intervention; Children (speech therapy with) ; Speech therapy for children ; Participle (morph.) ; Wortstellung; Satzfolge; Serialisierung; Serialization; Word order ; German