Tactile Sign Language Vs Visual Sign Language
Little data exists on the specifics of variation between visual and tactile sign language use. However, what studies there are suggest a significant degree of difference. In hand-over-hand signing, elements of deaf sign languages known as 'non-manual features’ (such as facial expression) will not be received, and will need to be substituted with supplementary information produced manually. Common non-manual features used in Deaf Sign languages that are absent in tactile signing include raised eyebrows as a question marker and a shaking head as a negation.
Tactile signing is also contained within a smaller space than is typical in visual sign language. Signs that touch the body may be moved forward into a more neutral space. Other signs which are usually produced in an ‘out of range’ location (such as the leg) may be modified (either spelled or a variant sign used).
Different rules govern turn taking, greetings and goodbyes.
Read more about this topic: Tactile Signing
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