[Multilingual children and language impairment].

For many children with a migration background, difficulties acquiring their second language skills influences their educational success. Because of the wide range of languages and their varieties, which are not described linguistically in detail, development of reliable and valid assessment procedures is hindered. This results in a diagnostic dilemma, as children who have problems learning their second language, along with many other reasons, have to be distinguished from children suffering from a specific language impairment (SLI). Children with migration background may show linguistic profiles which superficially resemble those of children with SLI. The current paper constitutes a selective review of relevant literature and offers suggestions for meeting those respective challenges. It is assumed that the prevalence for clinically relevant language disorder is the same in multilingual as in monolingual children. Also, multilingual children like monolingual children can show subtle cognitive weaknesses. The relevance of language disorder in psychiatrically ill multilingual and monolingual children is well known and has to be considered in the context of a comprehensive assessment. For those children with a migration background who face more pronounced problems acquiring their second language skills, language assessment in their mother tongue is essential.