In Russia, there are many decades of experience in the scientific study of the problem of impaired language development in children. Today, the term “Systemic speech-and-language underdevelopment (SLU)” has firmly established in Russian science and practice, implying a complex developmental disorder of speech and language in children with a primary normal hearing and a conserved intellect, in which the main components of the language system are violated: vocabulary, grammar, phonetics, and, as a consequence, dialogic and monologic speech. Traditionally, a differentiated level-by-level analysis of the speech and language abilities of children is used. The variability of the manifestations and severity of speech-and-language disorders were initially systematized and characterized in four levels of underdevelopment: from the complete absence of phrase speech to the availability of simple and complex sentences with lexico-grammatical errors. Effective algorithms of speech therapist work with SLU are introduced. The effectiveness of the application of these models and algorithms on the material of various language groups is proved.
Part of the book: Advances in Speech-language Pathology