By Kyle Turner
When asked if NAISL was created specifically for deaf people, Davis supported the possibility due to the historically higher percentage of hearing impaired among Native Americans. He said it has spread and evolved over time to become a complete language for others and not just the deaf.
Unlike monastic or occupational sign systems, NAISL is much more complex, Davis said.
Records indicate 12 language families and 40 spoken languages among the Native Americans but approximately only seven spoken languages in four linguistic families remain.