Language is language, regardless of the way you communicate. A new study by Psychology and Linguistics Professor Iris Berent at Northeastern University demonstrates that similar structures rule communication, and whether communication is via speech or sign is of secondary importance.
Basically, people adhere to certain patterns for what’s permissible in language and reject structures that “seem wrong.” By observing that research subjects with no knowledge of sign language mapped the rules of spoken language onto signs they were shown, researchers learned that ingrained rules play a bigger role than previously thought.