Last Tuesday afternoon, my friend Jenna picked up her five-year-old from his new Mandarin immersion kindergarten in Portland, and his teacher pulled her aside at the door. Six weeks into the school year, her son still hadn’t said a single word in class — not to the teacher, not to the other kids, nothing. He wasn’t crying at drop-off anymore. He wasn’t refusing to go in. He just… didn’t talk. Jenna texted me that night convinced something was wrong with him.

I’ve heard a version of this story more than once from parents at BloomPath, usually right around this point in the school year, when the new-classmate excitement has worn off and the silence hasn’t. Here’s what the actual research says is going on, and why it’s very different from what most parents assume.

TL;DR: A child who goes quiet at a new language-immersion school isn’t broken, behind, or being difficult — this is a well-documented phase in second-language acquisition called the Silent Period (or nonverbal period). Researchers estimate it can last anywhere from about two weeks to six months, and during it, most kids are actively building comprehension even though they aren’t producing speech yet. Many aren’t fully silent at all — they communicate constantly through gesture, pointing, and copying peers. The main exception to watch for is a child who goes silent in every setting, including home, or who shows real distress well past the typical window — that’s worth a conversation with a specialist.

What Is the Silent Period in Language Development?

The Silent Period is the stretch of time after a child is placed in a new language environment during which they understand far more than they say out loud. Linguist Stephen Krashen, who popularized the term, argued this silence isn’t a delay or a problem to fix — it’s the brain prioritizing comprehension before it risks production. Krashen and his colleague Tracy Terrell originally estimated this phase could run anywhere from one to six months in young children learning naturalistically.

Later research narrowed that estimate considerably. A well-known study by Pauline Gibbons that followed ESL students in Sydney primary schools found the average silent period lasted just over two weeks — but with huge individual variation. Some kids barely paused before jumping in. Others took months. Jenna’s son, six weeks in, was well within a normal range, even if it didn’t feel that way from the pickup line.

This article is part of our Positive Parenting Guide.

Why Does My Child Go Quiet Instead of Just Speaking Slowly?

Kids go quiet because talking in a new language takes more working memory than most adults remember it taking. Before a child says a single word out loud in a new language, they’re already doing enormous work: sorting new sounds, mapping them to meanings they already know, and figuring out the social rules of a completely new room. Linguist Lily Wong Fillmore mapped this out in her research on stages of early bilingual learning: kids typically keep using their home language for a while, then move into a nonverbal stage while comprehension builds, then start producing short formulaic chunks (“my turn,” “look at this”) before finally speaking more freely and creatively.

Skipping straight to speech without that comprehension-building stage isn’t actually possible for most kids — the silence is the work, not a delay of the work.

Is My Kid’s Silent Period Actually Silent?

Usually not, and this is the part that surprised me most in the research. A scoping review of emergent bilingual children during the silent period found that kids in this stage are rarely doing nothing — they point, mimic classmates, nod, laugh at the right moments, and use gesture constantly. Some researchers prefer “nonverbal period” over “silent period” for exactly this reason. A child who isn’t speaking English yet but is copying the hand-washing song, lining up correctly, and laughing along at circle time is communicating plenty. They just haven’t started producing spoken output in the new language.

I asked Jenna to watch for this specifically over the next week. She texted back two days later: he’d been “talking” the whole time, just not in words — pointing at the snack he wanted, high-fiving a classmate after a game, mimicking the teacher’s clean-up routine down to the exact gesture. None of that had registered to her as communication because she was only listening for English words.

How Long Should the Silent Period Last Before I Worry?

Most kids move out of the nonverbal stage somewhere between a few weeks and a few months, with real variation depending on the child’s temperament, how much exposure they get outside of school, and how similar the new language is to sounds they already know. A child who’s cautious by nature in any new environment — language or not — will often take longer here than a naturally outgoing kid, and that’s not a red flag on its own.

What is worth a closer look: a child who stops talking everywhere, including at home in their first language, who shows physical signs of distress (frozen posture, refusing to make eye contact even with familiar people, avoiding school altogether), or whose silence stretches well past six months without any of the nonverbal engagement described above. Speech-language pathologists note that this pattern can sometimes overlap with selective mutism, which is a separate anxiety-based condition that benefits from professional support rather than just time. The distinguishing detail is usually scope: normal silent period is specific to the new language and the new setting. Selective mutism tends to show up as anxiety that follows the child everywhere, not just at the classroom door.

What Should Parents Actually Do During the Silent Period?

Keep talking to your child in both languages, keep sending them to school, and resist the urge to demand a response. Asking “can you say it in Chinese?” in front of the class puts pressure directly on the part of the process that isn’t ready yet, and can make an anxious kid retreat further rather than open up. What actually helps is narrating without requiring a reply — “you picked the red cup” said calmly, no follow-up question attached — and giving your child credit for the nonverbal communication they’re already doing.

I’ll admit this is harder to sit with than it sounds. Watching your kid stand quietly at pickup while every other kid chatters at their parent in the new language triggers a very specific kind of parent panic, and I’ve felt it plenty of times over the years watching other families go through it at our own school. The instinct is to fix it fast. The research says the fix is mostly patience plus normal exposure — not flashcards, not extra tutoring, not pulling a five-year-old aside for a “practice conversation.”

BloomPath uses illustrated AI characters (Mei and Ethan) to protect our daughter’s privacy. The content is real; the avatars are illustrated. Learn more →

If you’re trying to track whether a quiet stretch is actually progress — comprehension building, gesture use, small signs your child is absorbing more than they’re showing — that’s part of why we built the BloomPath app: a way to log what you’re actually seeing, week over week, instead of relying on memory during an anxious month.

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Frequently Asked Questions

Is it normal for a child to stop talking completely at a new immersion school? Yes. This is commonly called the Silent Period or nonverbal period, and researchers estimate it can last anywhere from about two weeks to six months depending on the child. Most children are actively building comprehension during this time even though they aren’t producing speech in the new language yet.

How long does the silent period usually last? Estimates vary widely. Krashen and Terrell’s original estimate was one to six months, while a study of ESL students in Sydney primary schools found an average of just over two weeks, with wide individual variation. Temperament and amount of outside exposure both play a role.

Should I make my child practice speaking the new language at home? Forcing production before a child is ready tends to add pressure rather than speed up the process. Narrating calmly without requiring a response, and continuing to expose your child to the new language naturally, is more effective than direct practice drills.

How is the silent period different from selective mutism? Normal silent period silence is specific to the new language and setting — the child still communicates freely at home in their first language and often uses plenty of nonverbal communication at school. Selective mutism involves anxiety-based silence that tends to follow the child across multiple settings and typically needs professional evaluation.

Is my child actually communicating if they aren’t talking? Often, yes. Research on this stage shows children frequently point, gesture, mimic classmates, and participate nonverbally well before they start speaking the new language out loud — which is part of why some researchers now prefer the term “nonverbal period” over “silent period.”