Sign Language 101: Where it comes from and how to master the basics
Unsplash: Abubakar Isa
Okay, let’s play a game and don’t consult gracious Google on this one. Take a guess of how many sign languages there are in the world.
Did you guess about 300? Yes, there are roughly 300 different sign languages in the world! This is probably because there is no such thing as universal sign language.
In fact, each of the 300 sign languages is unique, possessing cultural elements specific to its country that developed slowly. Sign languages differ greatly based on region, just like dialects. For example, British Sign Language is totally different from American Sign Language and both sign languages are very different from Chinese Sign Language.
Sign language is used as a primary language by over 70 MILLION deaf people around the globe, and it’s also used by hearing people as well. That’s a lot of language to learn! Like other languages, sign follows a set of grammar and syntax rules that have developed over time.
Timeline of Sign Language
- 5th century BC – earliest written record of sign language noted in Cratylus by Plato
- 16th century – manual alphabet (fingerspelling) created by Spanish Benedictine monk Pedro Ponce de Léon
- 1620 – first guide of signed phonetic alphabet issued in Madrid by Juan Pablo Bonet
- 1648 – English physician John Bulwer records use of manual alphabet for communication by deaf man known as Master Babington
- 1680 – Didascalocophus or The deaf and dead mans tutor by George Dalgarmo published
- 1692 – Charles de La Fin writes book about alphabet system
- 1698 – pamphlet featuring consonants of modern alphabets published in Digiti Lingua magazine
- 1720 – British manual alphabet develops and becomes more widely used
- 1755 – first school for deaf children founded by Abbé de l’Epée in Paris
- 1817 – American School for the Deaf founded in Connecticut by Thomas Hopkins Gallaudet
- 1857 – National Deaf-Mute College founded by Edward Miner Gallaudet in Washington D.C., now called Gallaudet University
International Sign Language
International Sign (IS) is not a universal sign language but considered to be a pidgin language because the meaning of the sign is determined between the signers who lack a shared sign language. International Sign is also known as Gestuno, International Sign Pidgin, or International Gesture (IG). IS is commonly used in global meetings like the World Federation of the Deaf (WFD), the Deaflympics, and UN Conferences.
History of International Sign
The World Federation of the Deaf (WFD) is an international organization founded on September 23, 1951 in Rome, Italy. At this meeting the need for an international standardized sign was discussed, and as a result, The Commission of Unification of Signs published Gestuno: International Sign Language of the Deaf. Over the years, the term Gestuno has been phased out, replaced by the term International Sign (IS).
American Sign Language
American Sign Language (ASL) originated in the early 19th century in the American School for the Deaf. ASL is widely used in schools and in Deaf communities in the United States, most of Canada and in the other parts of the world like West Africa and Southeast Asia.
British Sign Language
British Sign Language (BSL) is the preferred sign language among the Deaf community in the UK. It is believed to have been used as early as the 16th century. BSL is also regionally and generationally diverse, much like the British language itself.
Indo-Pakistani Sign Language
Indo-Pakistani Sign Language (IPSL) is by far the most widely used sign language in South Asia, with around 15 million users. IPSL is ranked as the 151st most spoken language in the world.
Spanish Sign Language
Spanish Sign Language (SSL) is the language used in the Deaf community of Spain, with the exception of specific regions like Catalonia and Valencia. SSL is also believed to have influenced the development of Venezuelan Sign Language.
Sign Language in Pop Culture
Signing is a way to convey emotions, express opinions, thoughts, and ideas, not just with hands but with body language. You can see sign language depicted in pop culture, like in television shows, movies, and even in music videos.
In the television show called Switched at Birth, deaf characters and American Sign Language are represented. The show even featured an all-ASL episode inspired by a real-life protest at Gallaudet University called “Deaf President Now.”
In the Marvel Studios movie Eternals, the first deaf superhero named Makkari used ASL to talk to her fellow superheroes. Lauren Ridloff, the actor who plays Makkari, also starred in a Broadway production called Children of a Lesser God.
In the American Author’s song called “Pride,” the video stars Sandra Mae Frank, a graduate of Gallaudet University. In the video, we can see Frank signing the song with such intensity that you can feel the emotions radiating through the screen.


