The "Silent Period" in Bilingual Toddlers — Why It's Normal and How Long It Lasts

A few months after starting a new English-only preschool, a Spanish-dominant 3-year-old goes nearly silent. Not just in Spanish — in both languages. Parents call. “She used to talk all the time. Now she barely speaks at school, and her Spanish at home is regressing too. What happened?”

What happened, in most cases, is the silent period — one of the most well-documented and most misunderstood phases of bilingual development. Here is what it is, how long it usually lasts, and what to do (and crucially, what not to do) when your toddler is in it.

What the silent period is

The silent period is a phase that bilingual children — especially those acquiring a new second language after their first is somewhat established — go through during which their productive output in the new language drops dramatically, and sometimes drops in their first language too.

The child has not stopped learning. Quite the opposite. They are in an intense receptive-input phase: listening, processing, mapping, comparing. The brain is doing massive work to figure out the new language’s sound system, grammar, and rhythms. Output is paused while the input is reorganized.

This was described by researchers such as Muriel Saville-Troike, whose study of young second-language learners framed it as language development that has “gone underground” into private speech, and by Patton O. Tabors in One Child, Two Languages (1997), still the standard reference.

Two things deserve precision here, because parenting articles tend to flatten them. The silent period is common but not universal — a sizeable number of children never show a clear one. And when it does happen, its length varies enormously between children. Anyone quoting you a confident average is overstating what the research supports.

How long it usually lasts

The honest answer is weeks to months, usually under six. Tabors’ observations put the nonverbal period at shorter than six months in most children, and often considerably shorter — some studies of young second-language learners have found averages of only a few weeks, alongside a range stretching to several months. A number of children skip it entirely.

I’m deliberately not giving you a tidy average, because the research doesn’t support one. What it supports is this: a quiet stretch measured in weeks to a handful of months is expected, and the useful question is not “how long” but “is it still only the new language, and is the child otherwise engaged?”

Key variables that affect length:

• Age. The silent period is described mostly in children roughly 3–8 years old, and the literature reports it running longer in the younger children of that range — a 3-year-old typically stays quiet longer than a 7-year-old, not less.
• Temperament. Introverted, observant children tend to have longer silent periods than extroverted ones. This is temperament, not delay.
• Quality of input. Children getting rich, repeated, contextual input emerge faster than those getting sparse, decontextualized input.
• Emotional safety. Children in classrooms or homes that feel emotionally safe come out of the silent period faster than children in stressful environments.

What the silent period is NOT

This is the most important section.

• It is NOT regression. The child is acquiring, not losing.
• It is NOT speech delay. Speech-delay diagnoses require bilingual evaluation across both languages, not just the new one.
• It is NOT a sign to “pause Spanish.” This is the most damaging mainstream advice, and it’s the wrong move. The first language is the bridge to the second. Removing the bridge prolongs the silent period.
• It is NOT a sign of disengagement, autism, or trauma. It’s a normal developmental phase that resolves on its own with consistent exposure.

For the broader context on speech delay vs. bilingual difference, see our speech delay vs. bilingual difference post.

What it looks like in real life

A few common patterns parents describe:

• The child stops speaking the new language at school but still speaks the first language at home. This is the classic pattern.
• The child speaks less in BOTH languages for a while. Less common, and worth watching more closely — see the selective mutism note below.
• The child becomes a watcher. They observe peers, the teacher, the rhythms of the classroom. They seem checked out but are actually working hard.
• The child uses non-verbal communication more. Pointing, gesturing, nodding. This is a healthy compensation strategy.
• The child still speaks at home in their first language. Almost always — and this is reassuring. If your child still chats freely in Spanish at home, the silent period is just an at-school phenomenon, which is normal.

What to do when your child is in the silent period

1. Don’t push them to speak

The single most common mistake parents and teachers make is requesting performance. “Say hello in English.” “Tell the teacher what you want.” This pressure prolongs the silent period because it associates the new language with anxiety. Let the speech come when it comes.

2. Keep input rich and consistent

Don’t cut the first language. The child’s silent period in the new language is being processed through their first language. Cutting Spanish to “help with English” actually slows English acquisition.

3. Reduce performance situations

Birthday parties, doctor visits, family gatherings — situations where the child is asked to perform language in front of an audience — can be hard during the silent period. Reduce these temporarily if you can, or coach the child gently. “You don’t have to talk. Just stand by Mama.”

4. Increase receptive input

Read aloud more. Sing more. Narrate more. The brain is hungry for input right now. Feed it.

5. Trust the timeline

Most children come out of it well inside six months. Watch for the small signs of breaking out: a whispered word to a friend, an unprompted Spanish phrase from a child who’s been mostly silent, a response to a question that used to get a shrug.

When to worry

The silent period is normal. There are still scenarios where worry is appropriate:

• Silent in BOTH languages. This is the important one. A silent period belongs to the new language; a child who also goes quiet in the language they speak fluently at home is showing a different pattern. The main thing clinicians are distinguishing here is selective mutism, an anxiety disorder in which a child speaks comfortably in some settings and consistently not in others (ASHA’s overview). It is not common, it is treatable, and it is missed constantly in bilingual children because the silence gets written off as “just the language.” If the quiet covers both languages, or comes with visible anxiety and freezing rather than watchful observation, ask for an evaluation rather than waiting it out.
• Silent period plus other developmental concerns (no pointing, no eye contact, no responsive engagement). Worth a developmental pediatrician evaluation.
• Sudden silence after a previously verbal period in BOTH languages, lasting more than 6 weeks, with no environmental change (new school, move, family change, etc.). Worth a check-in.

If you’re seeing concerning patterns, the right move is a bilingual evaluation — not a monolingual one. See our working with monolingual speech therapists post and our bilingual development for children with speech and language differences post.

Why this is reassuring rather than worrying

The silent period is described in the second-language acquisition literature as a normal stage, not a warning sign — Tabors’ One Child, Two Languages is the standard reference, and it frames the quiet stretch as part of how a young child takes on a new language rather than a failure to.

What that means in practice for your family:

• Typically developing children come out of the silent period and go on building the new language.
• The comprehension your child is gaining while quiet doesn’t disappear. They aren’t starting over when they start speaking — they’re using what they took in.
• Silence in one language, while the other is working normally, is the pattern to expect. Silence in both is the one worth a closer look (see the signs above).

In other words: the silence is usually productive. What it isn’t is a diagnosis, in either direction — if something feels off to you, a bilingual evaluation is the way to find out, not a blog post.

A note for teachers

If your toddler’s teacher is concerned about silence, you can share this language:

“Lucia is in what’s called the silent period — a normal phase of bilingual development where children go quiet in their new language while their brain processes the input. It typically lasts a few weeks to several months. She’ll start speaking when her brain has mapped enough English to feel safe attempting it. The best thing is to keep speaking to her warmly and not require performance.”

For the deeper guidance on these conversations, see our when your toddler’s teacher doesn’t speak Spanish post.

What about expressive vs. receptive bilingualism?

Some children come out of the silent period as expressive bilinguals (they speak both languages comfortably). Others come out as receptive bilinguals (they understand both but mostly speak one). Both are normal. See our receptive vs. expressive bilingualism post for the full picture.

Frequently asked questions

How do I know my child is in the silent period and not just shy?

Shyness is a temperament; silent period is a developmental phase tied to language acquisition. If your child was previously verbal in their first language and the quiet coincides with new-language exposure, it’s almost certainly the silent period. Shy children tend to be quiet in both languages all along; silent-period children get specifically quiet around the new language.

My child only speaks at home now. Is that the silent period?

If it’s been less than 4 months since the start of English-only school and your child still speaks freely at home in Spanish, that’s a textbook at-school silent period. Wait it out.

Can I help by sending more Spanish to school?

A small amount, yes — a labeled photo of the family, a favorite bilingual book in the cubby. Don’t overdo it. The bridge is mostly built at home.

What if my child speaks Spanish at home but never English, even after 6 months?

Worth a check-in with a bilingual SLP. This could still be normal (some kids emerge slowly), but at 6 months and counting, you want professional eyes on the situation.

Can the silent period happen in reverse — to the first language?

Sometimes, briefly. Children moving from a Spanish-only home environment into an English-dominant school can occasionally show a temporary quiet in Spanish while they’re loading English. The first language usually rebounds within a few weeks if it’s supported at home.

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Where this comes from

• Patton O. Tabors, One Child, Two Languages (Brookes, 1997) — the standard reference on the nonverbal period in young second-language learners.
• Muriel Saville-Troike, “Private speech: evidence for second language learning strategies during the silent period”, Journal of Child Language (1988).
• The Hanen Centre, Bilingualism in Young Children: Separating Fact from Fiction.
• ASHA, Selective Mutism practice portal — for the differential described above.

If your child is in the silent period, the most supportive thing you can do is keep the home language rich and consistent. The 12-month curriculum sequences daily Spanish exposure across routines so the input stays steady. For free, start with our Spanish phrase cards.