Which variable is NOT a distinguishing characteristic of toddlers with SLI?

Typical phonological patterns are not a distinguishing characteristic of toddlers with Specific Language Impairment (SLI). Children with SLI often exhibit atypical phonological development, which can manifest as difficulties with sound production and phonological awareness. While they may show some typical phonological patterns by mimicking sounds or words, the hallmark of SLI includes persistent language difficulties despite having otherwise typical development in other areas, including cognitive abilities.

In contrast, a family history of language impairment, lower socioeconomic status, and the severity of language delay are associated with SLI and can contribute to the risk factors for language disorders. Therefore, understanding these characteristics helps in distinguishing between children who have SLI and those who do not.