The Old Chiangmai–Bangkok Sign Language family is a

language family A language family is a group of languages related through descent from a common ''ancestral language'' or ''parental language'', called the proto-language of that family. The term "family" reflects the tree model of language origination in h ...

of two related

sign language Sign languages (also known as signed languages) are languages that use the visual-manual modality to convey meaning, instead of spoken words. Sign languages are expressed through manual articulation in combination with non-manual markers. Sign l ...

s: Old Chiangmai Sign Language and

Old Bangkok Sign Language Bangkok Sign Language (also known as Old or Original Bangkok Sign Language) is a deaf-community sign language of Thailand that arose among deaf people who migrated to Bangkok for work or family. The language is moribund, with all speakers born b ...

. Woodward (2003) found that they were 65% cognate, indicating that the two languages are related, possibly due to migration between Chiangmai and Bangkok. There appear to be connections to sign languages of Vietnam (especially to Hai Phong Sign Language), and possibly Laotian sign languages, but the nature of these connections (whether areal or genetic) has not been determined. Village sign languages of Thailand, such as

Ban Khor Sign Language Ban Khor Sign Language (BKSL) is a village sign language used by at least 400 people of a rice-farming community in the village of Ban Khor in a remote area of Isan (northeastern Thailand). Known locally as ''pasa kidd'' ('language of the mute'), ...

, are unrelated.

References

{{DEFAULTSORT:Old Chiangmai-Bangkok Sign Language family Sign languages Sign language families Languages of Thailand