Recent research has shown that a distinct variety of American Sign Language, known as Black ASL, developed in the segregated schools for deaf African Americans in the US South during the pre-civil rights era. Research has also shown that in some respects Black ASL is closer than most white varieties to the standard taught in ASL classes and found…

The article discusses the importance of sociohistorical context which is the foundation of variation studies in sociolinguistics. The studies on variation in spoken and signed languages are reviewed with the discussion of geographical and social aspects which are treated as external factors in the formation and maintenance of dialects and those…