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Bilingual Children and Speech Development
Myths debunked and facts about raising bilingual children, including when bilingual development is typical and when to seek help.
Common Myths — Busted
There are many misconceptions about bilingualism and speech-language development. These myths can lead families to unnecessarily drop a home language, which can harm family connections and cultural identity. Here are the facts.
- MYTH: Bilingualism causes speech delays. FACT: Research consistently shows it does not.
- MYTH: You should only speak one language to avoid confusion. FACT: Children's brains are wired for multiple languages.
- MYTH: Mixing languages is a sign of confusion. FACT: Code-switching is a normal, sophisticated skill.
- MYTH: You need to stop the home language if your child has a delay. FACT: Dropping a language can harm family relationships and does not help the delay.
- MYTH: Bilingual children will fall behind in school. FACT: Bilingualism does not cause academic disadvantage and may provide cognitive benefits.
Important
Never let anyone tell you to stop speaking your home language to your child. Research is clear: maintaining the home language supports, not hinders, overall development.
Normal Bilingual Development
Bilingual children may develop language slightly differently than monolingual children, but these differences are normal variations, not delays. Their total vocabulary across both languages is typically comparable to monolingual peers. Each language may develop at a different rate depending on exposure.
- Bilingual toddlers may have fewer words in each individual language but a comparable total vocabulary
- First words may appear at the same age or slightly later — both are normal
- One language will typically be stronger (the dominant language) based on exposure
- Language dominance can shift over time as exposure changes (e.g., starting school)
- Bilingual milestones (babbling, first words, two-word combinations) follow the same timeline
Code-Switching is Normal
Code-switching — mixing two languages in the same sentence or conversation — is a completely normal part of bilingual development. It is not a sign of confusion or delay. In fact, it requires sophisticated language knowledge because the child must understand the grammar rules of both languages to blend them correctly.
- Children code-switch for the same reasons adults do: some words or ideas are easier in one language
- Code-switching follows grammatical rules — it is not random
- Children as young as 2 adjust which language they use based on who they are talking to
- Code-switching is more common when the conversation partner is also bilingual
Tip
If your child says 'I want leche,' they are not confused — they are being efficient. They used the word that came to mind first. This is a sign of healthy bilingual development.
When to Seek Help
A true speech or language disorder will show up in ALL of a child's languages, not just one. If your child is struggling only in their second language but communicating well in their first, they likely do not have a disorder — they may just need more exposure. Seek evaluation when concerns are present across both languages.
- Concerns are present in BOTH languages, not just one
- Your child is not meeting developmental milestones in either language
- Your child has difficulty understanding in both languages
- Other bilingual children in similar situations are developing language faster
- Your child is frustrated by communication breakdowns in both languages
Supporting Both Languages
The best thing you can do for your bilingual child is to provide rich, meaningful exposure to both languages. Speak the language you are most comfortable in — quality of interaction matters more than which language you use. Both languages need consistent, daily exposure to develop well.
- Speak the language you are most fluent in — your child needs to hear rich, natural language
- Ensure your child hears both languages daily from fluent speakers
- Read books, sing songs, and play in both languages
- Create opportunities for your child to interact with other speakers of each language
- Do not correct code-switching — simply respond in your preferred language
- Value and celebrate your home language and culture
What to Tell Your SLP
If your bilingual child is being evaluated, it is important that the SLP understands your child's full language profile. Be ready to share information about all the languages your child is exposed to.
- Which languages your child hears at home and how much of each
- Which language your child prefers or uses most
- Whether concerns are present in one or both languages
- Your child's language history: when each language was introduced
- Whether other family members had speech or language delays
- Ask whether the SLP has experience with bilingual children or can consult with someone who does
Note
Your child has a right to be assessed in all languages they speak. If your SLP does not speak your home language, they should use an interpreter or collaborate with a bilingual professional.
This handout is for educational purposes and does not replace professional evaluation or treatment. If you have concerns about your child's development, consult a licensed speech-language pathologist.
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