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Bilingual development
3–5 years
Article · 7 min

Language difference is not a language disorder

Why bilingual children are sometimes over- or under-identified, and what fair assessment looks like.

A disorder shows up in every language a child speaks. A difference shows up only in the newer language.

Standardized English tests were normed on monolingual English speakers. Used alone with a bilingual child, they mislead.

Fair assessment uses parent interview, language sampling in both languages, and dynamic assessment.

Available in 6 languages

Each version is reviewed by a bilingual clinician from that community before it is published.

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