AS WITH spoken languages, there is no “universal” sign language. Different countries have their own versions, which are ...

According to the World Federation of the Deaf, there are around 70 million people worldwide whose first language is some kind of sign language. In the US, ASL (American Sign Language) speakers ...

they use more than 300 different sign languages. Sign languages are fully fledged natural languages, structurally distinct from the spoken languages. There is also an international sign language ...