No, baby sign language is not the same as ASL. While baby sign language borrows many of its individual signs from American Sign Language, the two are fundamentally different. ASL is a complete, standalone language with its own grammar, syntax, morphology, and pragmatics, used primarily by the Deaf and Hard of Hearing community across the United States and parts of Canada. Baby sign language, by contrast, is a simplified communication tool where hearing parents teach their hearing babies isolated signs — usually one word at a time — as a bridge until spoken language develops.
If you teach your eight-month-old the sign for “milk,” you are using an ASL sign, but you are not teaching your baby ASL. This distinction matters more than most parents realize. As the American Speech-Language-Hearing Association emphasized in a 2024 article titled “‘Baby Signing’: What It Is — and What It’s Not,” conflating the two misrepresents ASL’s cultural significance and linguistic complexity. A parent signing “more” at the dinner table is not engaging in the same practice as a fluent ASL speaker constructing sentences where facial expressions serve grammatical functions, not just emotional ones. This article covers the specific differences between baby sign language and ASL, what the research actually says about the benefits of signing with babies, when and how to start, and some honest limitations that the baby sign language industry tends to gloss over.
Table of Contents
- What Exactly Separates Baby Sign Language from ASL?
- What Does the Research Actually Say About Baby Sign Language Benefits?
- Why the Distinction Between Baby Sign Language and ASL Matters to the Deaf Community
- How to Start Signing with Your Baby and What to Teach First
- Common Mistakes Parents Make with Baby Sign Language
- Baby Sign Language in Daycare and Group Settings
- Where Baby Sign Language Goes from Here
- Conclusion
- Frequently Asked Questions
What Exactly Separates Baby Sign Language from ASL?
The core difference comes down to language versus vocabulary. asl has sentence structure, verb conjugation, spatial grammar, and grammatically meaningful facial expressions. When a Deaf person signs a question in ASL, their eyebrows raise — not because they feel curious, but because that facial movement is a required grammatical marker. Baby sign language strips all of this away. Parents teach individual signs in isolation — “eat,” “water,” “all done” — without any of the surrounding grammar. As linguist and researcher Dr. Joseph Garcia has explained, baby signs used this way are “simply signs or symbolic gestures,” not language in the linguistic sense.
That said, most of the individual signs used in baby sign language are actual ASL signs. When you teach your baby the sign for “more” by tapping your fingertips together, that is the real ASL sign. In some cases, signs are simplified to accommodate infant motor skills — a baby might approximate the sign for “milk” with a full-hand squeeze rather than the precise handshape used by adult ASL signers. But the signs themselves are largely borrowed directly. The confusion arises because people see ASL signs being used and assume the whole system is ASL. It is not. Using a handful of French words at a restaurant does not mean you speak French, and using a handful of ASL signs with your baby does not mean you are teaching ASL.
What Does the Research Actually Say About Baby Sign Language Benefits?
The most frequently cited study in the baby sign language world is the landmark NIH-funded research by Acredolo and Goodwyn published in 2000. They followed 140 families and found that 11-month-old babies taught signs had larger vocabularies at age two compared to non-signing peers. That finding launched an entire industry of flash cards, DVDs, apps, and youtube channels marketed to parents. What gets mentioned far less often is the second part of that finding: the vocabulary advantages leveled off by age three. Signing babies did not maintain a lasting lead over their non-signing peers. A broader review of the research literature confirms this pattern.
According to Parenting Science, no compelling evidence exists that baby signing yields long-term developmental advantages such as higher IQ or faster language acquisition. However, shorter-term benefits are real and worth noting. A 2025 study published in Cognition found that sign language promotes object categorization in young hearing infants, suggesting cognitive benefits during the signing period itself. The American Academy of Pediatrics also supports baby sign language as a positive tool for improving early communication and strengthening the parent-baby bond. The honest takeaway is that signing with your baby is genuinely useful in the moment — reducing frustration and opening a communication channel months before speech arrives — but it is not the cognitive miracle that some products promise. If your primary motivation is giving your child a lasting academic edge, the evidence does not support that expectation. If your motivation is communicating with your pre-verbal baby and reducing the meltdowns that come from not being understood, the evidence supports that goal well.
Why the Distinction Between Baby Sign Language and ASL Matters to the Deaf Community
When hearing parents casually say they are “teaching their baby ASL,” it can feel dismissive to people for whom ASL is not a parenting trend but a primary language and a cornerstone of cultural identity. ASL has its own poetry, humor, storytelling traditions, and history of linguistic oppression. For decades, Deaf children were punished for signing in schools that enforced oral-only education. Reducing ASL to a set of cute gestures you do with your baby at mealtime erases that context. This does not mean hearing families should avoid using ASL-derived signs. It means they should be accurate about what they are doing.
Saying “we use signs from ASL to communicate with our baby” is both honest and respectful. Saying “we are teaching our baby ASL” is not accurate unless you are also teaching grammar, syntax, and engaging with the language as a complete system. Some families do go this route, enrolling in actual ASL classes and raising bilingual children. That is a different and more involved commitment than picking up ten signs from a YouTube video. A good litmus test: if you could not hold a basic conversation with a Deaf adult using what you have taught your child, you are not teaching ASL. You are using ASL-sourced signs as a communication tool, and that is perfectly fine — just call it what it is.
How to Start Signing with Your Baby and What to Teach First
Babies can start signing back between six and twelve months of age, though parents can begin modeling signs as early as six months. The key word is “modeling” — you will be signing for weeks or even months before your baby signs back. This is normal and mirrors how spoken language works. Babies understand words long before they say them. The most common first signs that parents teach include milk, more, eat, all done, water, diaper, sleep, and help. These work well because they map to immediate, concrete needs that come up multiple times a day, giving your baby repeated exposure. The practical tradeoff parents face is whether to use actual ASL signs or make up their own gestures. Research suggests it does not matter much for the baby.
The only study comparing made-up infant signs with actual British Sign Language signs found that children learned both equally well. However, there is a strong argument for using real ASL signs anyway. If your baby goes to daycare, a caregiver who knows ASL will understand standard signs but not your family’s invented ones. Real ASL signs also give your child a foundation if you ever decide to pursue more formal sign language learning later. The consistency of a standardized system outweighs the minor convenience of making something up on the spot. Start with three to five signs and use them consistently in context. Sign “milk” every time you offer milk. Sign “more” every time you offer a second helping. Repetition and context are what make it click, not the number of signs you introduce at once.
Common Mistakes Parents Make with Baby Sign Language
The biggest mistake is expecting too much too soon and then quitting. Many parents start signing at six months, see no response by seven months, and conclude it is not working. Babies need time to develop the motor skills and cognitive connections required to sign back. A baby who is not signing at seven months may surprise you at nine or ten months with a sudden burst of signs. Patience is not optional here. Another common error is inconsistency. If you sign “eat” at breakfast but forget at lunch and dinner, your baby gets one-third of the exposure they need.
Signing has to become a habit integrated into daily routines, not something you remember to do occasionally. This is also where the gap between baby sign language products and real-life practice shows up. Watching a baby sign language video is not the same as actively signing during diaper changes, meals, and bedtime. The screen is a reference tool, not a substitute for live interaction. A subtler mistake is using baby sign language as a reason to delay speech therapy evaluation. If your child is eighteen months old, uses several signs, but has no spoken words, that is worth discussing with a pediatrician. Signing should complement spoken language development, not mask potential delays. The American Academy of Pediatrics supports signing as a communication tool, but it is not a diagnostic tool, and a child who signs but does not speak on a typical timeline still deserves professional evaluation.
Baby Sign Language in Daycare and Group Settings
Baby sign language has become mainstream among proactive parents and childcare providers alike, with many daycare centers incorporating basic signs into their daily routines. This is where using standard ASL signs rather than invented gestures pays off. When a toddler signs “more” or “all done” using the recognized ASL signs, any trained caregiver in any facility can understand them.
A child using a family-invented sign for “water” will not get the same response from a new caregiver who has never seen that gesture before. If you are choosing a daycare and signing is important to your family, ask whether the staff uses baby sign language and which signs they teach. Consistency between home and daycare accelerates learning and reduces frustration for everyone — especially the baby who is trying to communicate the same need in two different environments.
Where Baby Sign Language Goes from Here
The trajectory of baby sign language points toward broader normalization rather than any dramatic shift. It is now a standard recommendation from pediatricians, a common feature in early childhood education programs, and an established category in the parenting product market. What may change is the conversation around it. As awareness of Deaf culture and ASL as a language grows, more parents and educators are becoming thoughtful about the distinction between borrowing signs and learning a language.
Some families are using baby sign language as an entry point into genuine ASL study, which benefits everyone — the child gains a second language, and the Deaf community gains more hearing people who can communicate with them. The 2025 research on sign language and infant cognition suggests that scientists are still uncovering new dimensions of how signing affects early brain development. Future studies may identify specific cognitive windows where signing has the most impact, or clarify which aspects of signing — the visual-spatial processing, the motor engagement, the multimodal communication — drive the benefits researchers have observed. For now, the practical case for signing with your baby remains strong, even if the long-term academic claims remain unproven.
Conclusion
Baby sign language and ASL are not the same thing, and the distinction is worth understanding. ASL is a complete language with grammar, syntax, and deep cultural roots in the Deaf community. Baby sign language is a communication tool that borrows individual ASL signs to help pre-verbal babies express basic needs. The research supports real but modest benefits — reduced frustration, improved early communication, and stronger parent-child bonding — without evidence of lasting cognitive advantages over non-signing peers.
Knowing this allows you to set realistic expectations and appreciate signing for what it genuinely offers rather than what marketing materials promise. If you decide to sign with your baby, start around six months with a handful of concrete, everyday signs like milk, more, eat, and all done. Use real ASL signs for consistency and portability across caregivers. Be patient, be consistent, and do not treat signing as a replacement for monitoring typical speech development milestones. And if the experience sparks a genuine interest in ASL as a language, consider taking that next step — your child, and the Deaf community, will be better for it.
Frequently Asked Questions
At what age should I start teaching my baby sign language?
You can begin modeling signs as early as six months. Most babies start signing back between six and twelve months, though every child develops on their own timeline. Do not be discouraged if it takes several weeks of consistent modeling before you see a response.
Will teaching my baby sign language delay their speech?
No. Research consistently shows that baby sign language does not delay speech development. The American Academy of Pediatrics supports it as a positive communication tool. Signs typically serve as a bridge to spoken language, and most children naturally drop signs as their verbal skills catch up.
Should I use real ASL signs or make up my own?
Either approach works for your baby — research shows children learn invented gestures and formal sign language signs equally well. However, real ASL signs offer practical advantages: they are recognized by other caregivers, they provide consistency if your child moves between settings, and they lay a foundation for further ASL learning.
Is baby sign language the same as teaching my child to be bilingual in ASL?
No. Teaching a few dozen isolated signs is not the same as raising a bilingual child. True ASL fluency requires learning grammar, syntax, and cultural context. Baby sign language uses ASL vocabulary without ASL structure. If bilingualism is your goal, you would need formal ASL instruction for the whole family.
Do the cognitive benefits of baby sign language last?
The most rigorous research, including the NIH-funded Acredolo and Goodwyn study, found early vocabulary advantages that leveled off by age three. There is no strong evidence of lasting IQ boosts or long-term academic benefits. The real, proven benefits are in short-term communication and parent-child bonding.