Anna Shusterman, left, and Lisa Drennan '09 speak to a Deaf man by using Nicaraguan Sign Language. The language is only 30 years old. Posted 09/04/08 In the United States, Deaf people have had the ability to communicate by using sign language since the early 1800s. But in Central Americas largest nation of Nicaragua, the Deaf community had no formalized language until 30 years ago. This emerging language, known as Nicaraguan Sign Language, is the topic of a recent study by Anna Shusterman, assistant professor of psychology, and psychology major Lisa Drennan 09. The language was first created by local…