American Sign Language gives a toddler with speech delay a way to communicate while spoken words are still coming. Signs are easier for small hands than words are for an immature speech system, so a child who cannot yet say "more" or "help" can ask for them — which cuts frustration, keeps language learning moving, and gives parents and therapists something to build on.
ASL is the full, grammatically complete language used by Deaf communities in the United States and much of Canada. Most hearing families with a speech-delayed toddler do not learn all of it; they borrow its signs and use them alongside spoken English. That distinction matters for what you should expect, and it shapes almost every practical decision below.
Table of Contents
- Why signs often come before words
- Does signing delay speech?
- Which signs to teach first
- Working with a speech-language pathologist
- Signs that it is working, and when to add another system
- ASL as a language, not just a toolkit
- Frequently Asked Questions
Why signs often come before words
Speaking is a fine-motor task of remarkable difficulty. It requires precise, fast coordination of the lips, tongue, jaw, palate, and vocal folds, timed against breath. Gross hand movements mature earlier, which is why babies point and wave months before they talk. A toddler with a speech delay frequently understands far more than they can say.
The gap between receptive language (what a child takes in) and expressive language (what a child can produce) is where behavior problems live: the tantrum at the fridge is often a vocabulary problem. A sign gives that understanding an exit route. Signs also carry an advantage words do not: an adult can physically shape a child's hands. You cannot mold a tongue into the right position, but you can gently form the sign for MILK and then hand over the cup. That hand-over-hand prompting, faded gradually, is a standard teaching technique in early intervention.
Does signing delay speech?
This is the question most parents ask first, and the professional consensus is reassuring. Speech-language pathology practice and the broader research on augmentative and alternative communication (AAC) — any system that supplements or replaces speech, including signs, picture boards, and speech-generating devices — do not support the idea that providing another channel suppresses talking. Reviews of AAC in young children have generally found speech gains stayed the same or improved. The mechanism makes sense.
Signs are paired with spoken words, not substituted for them, so the child hears the word every time. A child who signs MORE and receives a response has just learned that communication works, which is the motivation speech depends on. Be skeptical, though, of the stronger marketing claim that baby sign raises IQ, accelerates reading, or produces advanced talkers. Studies on signing with typically developing babies have been small and mixed, and long-term advantages have not held up well. The defensible claim is narrower and still worth a lot: less frustration, earlier functional communication, and a bridge while speech develops.
Which signs to teach first
Start with signs that change what happens next. A sign the child can use to get something is learned fast; a sign for a zoo animal they see twice a year is not. Aim for five to ten signs at first rather than a long list.
Model each one dozens of times across ordinary days, say the word clearly as you sign it, and accept approximations — a toddler's version of MORE often looks like two flat hands clapping, and that counts. Resist the urge to quiz. "What's this? What's the sign?" turns communication into a test. Sign during the moment the word is useful instead: hold up the yogurt, sign and say EAT, pause, and wait several seconds for any response.
- MORE, ALL DONE / FINISHED, HELP, EAT, DRINK, MILK — the core requests most families begin with.
- Names of two or three favorite foods, plus one comfort item (blanket, specific stuffed animal).
- UP, OPEN, PLAY, OUTSIDE — signs that get a door opened or a game started.
- STOP and NO — a toddler needs a way to decline, or they will decline with their body.
- WHERE and WHAT, once requesting is solid, so the child can ask rather than only answer.
Working with a speech-language pathologist
Sign is a tool inside a plan, not a substitute for assessment. Persistent speech delay has many possible drivers — hearing loss, including the intermittent kind from fluid behind the eardrum; childhood apraxia of speech; oral-motor weakness; a language disorder; autism; or a delay that resolves on its own. These lead to different treatments, and the differences matter. Get hearing tested early, even if your child seems to respond to sound.
A child can pass a casual at-home check and still have a loss in the speech frequencies, and undetected hearing loss is one of the most common reversible causes of delayed talking. In the United States, children under three can be referred to the state's Part C early intervention program, and families can refer their own child; from age three, services run through the local school district. Evaluations through these programs are provided at no cost to families. Ask the evaluating SLP directly how signs fit the plan, which ones to prioritize, and how progress will be measured.
Signs that it is working, and when to add another system
Progress usually shows up as a widening repertoire and more spontaneous use. A child who only signs MORE when you prompt it is imitating; a child who crosses the room to sign MORE at you is communicating. The second is the goal. Watch for signs the child outgrows or struggles with the modality.
If the child's signs are not understood by people outside the household, if they want to say more than a hand shape can carry, or if motor difficulties make signs unclear, raise picture-based systems or a speech-generating app with your SLP. These are not a step backward, and a child can use signs, pictures, speech, and a device at once. Two cautions worth keeping in mind. First, signs only work with people who know them, so teach the family's core vocabulary to grandparents, babysitters, and daycare staff — a communication system no one else can read is a private language. Second, keep speaking normally; slowing your speech to a crawl or dropping words to match the child's level removes the model they need.
ASL as a language, not just a toolkit
If your family finds signing valuable, it is worth knowing what you are borrowing. ASL has its own grammar and word order, uses facial expression and body position grammatically, and is not a manual code for English. The handful of signs most hearing families use is closer to supported speech than to fluency in ASL. That distinction has a practical edge.
A child who is Deaf or hard of hearing has a different situation from a hearing child with a speech delay: full access to a complete language, taught by fluent users, is a developmental need rather than a bridge. Families in that position are best served by Deaf educators, Deaf adults, and ASL-fluent professionals, not a starter vocabulary. For hearing families, learning from Deaf-created instruction is still the better route — handshape, movement, and location all carry meaning, and a sign learned sloppily from a stock photo may not be the sign at all. Local community colleges, Deaf community events, and ASL classes taught by Deaf instructors give you accurate models and, often, a reason to keep going past the first ten signs.
Frequently Asked Questions
My toddler makes the sign wrong. Should I correct it?
Not directly. Accept the approximation, respond to the request, and keep modeling the accurate version — hand shape sharpens with motor maturity, the same way pronunciation does.
Can we start if my child is already two or three?
Yes. There is no window that closes. Older toddlers often pick up functional signs faster because they already understand the words and only need a way to produce them.
Will daycare support signing?
Many will if you make it easy. Give staff a one-page sheet with photos of your child's five to ten signs and what each one means, and ask that they sign and say the word together.
How long should we keep signing once speech starts?
Let the child drop signs on their own. Most fade a sign naturally once the spoken word is reliable, and keeping both available means they never lose a way to be understood on a hard day.