AS WITH spoken languages, there is no “universal” sign language. Different countries have their own versions, which are related to local cultural and religious backgrounds. For example ...

Sign languages have a long and rich history in the United States and across the world. ASL is the third most common language in the United States after English and Spanish. There are more than 300 ...

More than 80% of them live in developing countries. Collectively, they use more than 300 different sign languages. Sign languages are fully fledged natural languages, structurally distinct from ...