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Black American Sign Language is a dialect of American Sign Language (ASL) spoken most commonly by deaf African Americans in the United States. The divergence from ASL was influenced largely by the segregation of schools in the American South. Like other schools at the time, schools for the deaf were segregated based upon race, creating two language communities among deaf signers: White deaf signers at White schools and Black deaf signers at Black schools. Today, BASL is still used by signers in the South despite schools having been legally desegregated since 1954.

Linguistically, BASL differs from other varieties of ASL in its phonology, syntax, and lexicon. BASL tends to have a larger signing space meaning that some signs are produced further away from the body than in other dialects. Signers of BASL also tend to prefer two-handed variants of signs while signers of ASL tend to prefer one-handed variants. Some signs are different in BASL as well, with some borrowings from African American English. (more...)