Ghanaian sign language (GhSL), unlike American Sign Language (ASL), is a
developing language and is yet to acquire the structure and form that will
make it a fully-fledged language. The origins of GhSL can be traced to Rev.
Jackson Foster, a Deaf1 African American educator from Gallaudet University,
who started a Special School for the Deaf in Ghana, located at Osu, in 1957
to teach Deaf Ghanaians ASL [37]. When he left the scene, Ghanaians
adopted ASL. Mr. Oppong, author of a GhSL textbook, defines GhSL as ASL
adapted to suit “local and cultural conditions” [37]. Equation 1.1 below
summarizes the concept of GhSL: