Mother and child communicates through writing.

Mother and child communicates through writing.

A child chats the whole drive to an appointment, then goes quiet the moment the questions start. A student talks freely at home and says nothing at school. It’s easy to read moments like these as choices, and plenty of adults do. Having had selective mutism myself as a child, I come at this from the inside, and I’d offer a different lens: speech depends on capacity, and capacity moves.

Speech is a capacity, not a switch

The ability to speak isn’t a fixed trait. Some autistic people are non-speaking. For many others, speech sits on a range. It may be physically possible and still slip out of reach in particular places or moments.

When a child can’t speak in certain settings, that pattern is called selective mutism. It’s frequently overlooked, and it’s often mistaken for misbehavior. The takeaway worth holding onto: speaking yesterday doesn’t guarantee access to speech today.

Signs it may be capacity rather than choice

These are patterns worth noticing, not a way to diagnose anything:

  • Speech flows in familiar places and fades in others, or when questions begin.
  • Quiet deepens with noise, crowds, or a pile-up of questions.
  • Taking part gets easier in a smaller group, with more structure, or with a trusted person close by.
  • Speech shifts from day to day or week to week.
  • A child seems quiet but is clearly engaged.

Thinking in terms of load

Load is everything an environment asks of a body and mind at once. Sound, visual clutter, and smells all count, and so do sensations inside the body. Questions and demands add weight too.

A useful check-in is whether what’s happening right now is adding to that weight or lightening it. More questions usually add. A quick scan can help:

  • How loud and visually busy is the space?
  • How comfortable is the child’s body, and how many hours have they been holding it together?
  • How many questions are coming, and how much time is there to respond?

In schools and clinics, it also helps to track glimmers, the things that raise a child’s capacity, and triggers, the things that lower it. A short note on your phone after a good day and a hard one can reveal patterns quickly. Expect them to change.

A glimpse from my own childhood

At four, I was fluent in English yet silent at preschool, whispering to one friend and no one else. The adults saw something to correct, and placing us in separate kindergarten classes didn’t bring the words back. What did help was a smaller, more structured group with my mother present. The conditions mattered far more than willpower, and I wish more adults had wondered about that.

Communication beyond speech

Many routes lead to the same place: writing, typing, pointing, gestures, picture boards, and augmentative and alternative communication (AAC). Speech at other times doesn’t rule out any of them.

Writing is often my strongest channel. It tends to take longer than talking, and the person receiving it may need extra time to absorb the meaning. A slower pace isn’t disrespect or laziness. It’s simply a different rhythm.

Participation can look different too. A dean once told me my participation grade was low because I hadn’t spoken, while I felt intensely engaged the entire time. Quiet and disengaged are not the same thing.

In clinics and everyday life

Health care leans heavily on speech: phone calls to book, then explaining symptoms out loud in the room. Messaging options, where they exist, can turn that into something doable. For me, it’s access to my own care.

Picture a child who chats in the car, then falls silent in the exam room. With time and a familiar picture board, they point to their stomach, and the visit moves forward without waiting for words.

Ordinary errands carry the same hidden hurdles. At a conference, getting my hotel room cleaned required a call to management, and the call itself was the obstacle. Travel, school, and work each have versions of this.

Building a plan while things are calm

  • Decide on ways to report pain, request a break, and say no without speaking.
  • Keep familiar tools, like a picture board, a notes app, or an AAC system, close at hand.
  • Share the plan with school and healthcare teams, ideally on one page.
  • Bring in a speech-language clinician when extra support would help.

Quick answers

Does using AAC mean speech isn’t possible? No. Speech at other times doesn’t disqualify someone from AAC, and support works best when it stays available throughout.

Should I stop asking questions? Fewer is usually kinder. One at a time, followed by genuine waiting, tends to land better, and eye contact or a spoken answer needn’t be required.

My child talks with me but not with others. What now? That pattern is common. It points toward the load in those other settings, so supports there are a good place to start.

Why it matters

Understanding different ways of communicating is really about access: taking part in the world at home, at school, at work, and on vacation.

Isolation is a serious health risk, and building community is one of my hopes for this podcast. You matter, your kid matters, and you are not alone.

Whenever you’re ready, and only if it resonates, you might notice one way your child already communicates beyond speech and simply listen. No rush, and nothing to fix.

Episode 4 of The PDA Doc goes deeper

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