New Tools Help Spot Language Disorder in Bilingual Kids

Six-year-old Antoni speaks only a few English words in his UK classroom, but his teachers face a crucial question: Is he simply learning a second language, or does he have a condition that will affect him for life?

Developmental language disorder, or DLD, severely impairs a child's ability to learn and understand spoken language. It affects roughly 8% of children worldwide, yet it remains far less recognized than dyslexia, autism, or ADHD.

The challenge gets trickier with multilingual kids. In England alone, 21% of schoolchildren grow up speaking a language other than English at home. These children may temporarily lag in vocabulary in one language, which is completely normal. But kids with DLD struggle across all their languages and need specialist help.

For years, speech and language therapists lacked reliable tools to assess children who speak multiple languages. Too often, DLD went undetected or normal multilingual development got wrongly labeled as a disorder. Both mistakes delayed the support these kids desperately needed.

The stakes are high. DLD affects far more than just language. Children with undiagnosed DLD face challenges with mental health, literacy, academic performance, and quality of life. Adults with DLD are more likely to struggle finding jobs and even have criminal records.

The Bright Side

Researchers are finally closing the gap. Teams at Newcastle University and across the UK are developing assessment tools specifically designed for multilingual children. The UK bilingual toddler's assessment tool looks at two-year-olds' vocabulary in both languages, comparing their development to how much they hear each language at home.

Another promising resource uses storytelling and voice recognition activities to explore how children learn, not just what they already know. These enjoyable activities can spot DLD while also revealing each child's unique strengths.

Perhaps most importantly, researchers have debunked a harmful myth: learning multiple languages does not cause or worsen DLD. In fact, multilingualism promotes linguistic, social, and cognitive strengths in all children. The best support sustains all of a child's languages, protecting their identity, well-being, and family relationships.

Early detection changes everything. With the right support from families, schools, and speech therapists, multilingual children with DLD can thrive, growing up healthier and happier with tools designed just for them.