History of Baby Sign Language

Learn the history of Baby Sign Language, from it’s roots in a strange observation made by a 19th century linguist, through to mainstream acceptance in the 2000s.

  • 1800s: William Dwight Whitney discovers children in deaf families outperforming hearing peers.
  • 1980s: Dr. Joseph Garcia rediscovers BSL and starts teaching signing to hearing families.
  • 1990s: Prof. Acredolo & Goodwyn’s research shows that BSL works and that there are enormous benefits.
  • 2000s: BSL is gaining widespread acceptance as the evidence mounts.

History of Baby Sign Language

1800s: Whitney’s Curious Observation

William Dwight Whitney made a curious observation: children of deaf parents are routinely communicating through sign language at 6 months – a year before children in hearing families.

Whitney, a 19th century linguist, was a professor at Yale and an writer of the now ubiquitous Webster’s dictionary. While studying the deaf community, he remarked on the superior communication abilities of their children. Despite having what people of the time considered the handicap of growing up in a deaf household, these children were making their hearing peers look slow.

Not only are children in deaf families communicating through sign language earlier, they have normal speaking trajectories. Despite having parents that do not speak, children in deaf families learn to speak at the regular age. Signing not only lets them communicate at a younger age, it also helps them learn to speak.

Whitney did not take it much further than that and this curiosity was left largely un-investigated for more than a century until it was rediscovered in the 1970s.

William Dwight Whiteney
William Dwight Whitney

1980s: Rediscovery & First Steps

Dr. Joseph Garcia, then an ASL interpreter, was the first to take the next step. Dr. Garcia noticed that the children of his deaf friends were communicating with their parents at six months old using sign language and had substantial vocabularies at nine months old. This was also surprising to Dr. Garcia since most children don’t start saying their first few words until 12 months old and will still have a very small vocabulary at two years old. Dr. Garcia wrote about this phenomenon in his 1986 graduate thesis. Dr. Garcia began using sign language to teach the children of hearing parents and later started a company to teach baby sign language.

Jospeh Garcia
Dr. Joseph Garcia

1990s: Research Findings Grow

In the late 1980s, Professor Linda Acredolo noticed her daughter making rudimentary signs. Working with her research partner at the University of California (San Diego), Professor Susan Goodwyn, the pair began teaching the baby more formal signs.

Acredolo and Goodwyn won a series of NIH grants to study Baby Sign Language. Over the next 20 years, Professor’s Acredolo and Goodwyn conducted the first comprehensive baby sign language research. Through a series of studies, they showed benefits including:

  • Less frustration and a closer bond
  • A larger speaking vocabulary
  • 12 IQ point advantage

Acredolo & Goodwyn also started to push Baby Sign Language into the mainstream, starting a company to promote signing.

Acredolog & Goodwyn
Professors Acredolo & Goodwyn
Associated with higher IQ

2000s: Going Mainstream

Through the 2000s, acceptance and use of baby sign language has continued to grow. In 2006, PBS began running the Signing Time series, further growing awareness of the benefits of Baby sign Language. And today signing is used by millions of families and has become an integral part of the program in many early childcare centers.

Baby Sign Language has also been winning praise from professionals, winning an endorsement by the American Academy of Pediatricians in the latest edition of their guide to infant care, Heading Home With Your Newborn.

This site, BabySignLanguage.com, was founded in 2010 to provide free access to Baby Sign Language. We have helped over 2,000,000 families in over 190 countries learn Baby Sign Language. We support this free website through the sale of Baby Sign Language kits. Thank you for your support.

Baby Signing Time
Pediatrician Approved
Baby Sign Language Kit

4 Responses to “History of Baby Sign Language”

  1. Brigit

    Hi there,

    I was wanting to know the name of the organization or company that runs this site. I cant seem to find any credentials or information.



    ADMIN – Hi Brigit,

    Our corporate name is http://www.babysignlanguage.com, just like the domain. We are ran and operated by a team of mothers and educators. If you need additional details please feel free to give us a call.

  2. Joane Stoner

    Who is the lady in the videos on the website?? She looks so familiar to me, but I can’t place her

    ADMIN – Hi Joane,

    Our founder, Lila.

  3. Kelly A Leeper

    Who is the artist, the illustrator?

    ADMIN – Hi Kelly,

    Non dominant hand is the canvas and the other hand is a full brush that swipes from top to bottom at chest height.