Sign language is a specific language in which the substantial content of a statement is conveyed in the same way that non-verbal kinetic means are conveyed in sound language . Although sign language is made up of a set of coded gestures transmitted through the gestural-visual channel, however, as in the case of audio speech, it is almost never a dehumanized presentation of contractual signs, devoid of non-verbal means.
Assuming that signs of signs are the equivalent of the verbal part of a natural language, there are also phenomena in sign language that can be classified as acts of non-verbal communication, similar to the case of acts of communication made in an audio language. They mainly include:
- facial expressions and pantomimics that are part of the signs of the signs10,
- facial expressions and pantomime that complement the statement,
- the way of presenting the signs of the signs (rhythm, rhythm of the word, accentuation, etc.),
- natural gestures, i.e. not signing signs,
- eye contact – quality and exchange of glances,
- physical distance between interlocutors and touch,
- body position during conversation.
As in communication through auditory languages, non-verbal behavior is less controlled by the petitioner than verbal behavior, is not completely spontaneous, and is not subject to commonly known social rules. Some kinetic signs are used by deaf people for specific purposes related to hearing impairment. For example, tapping the foot on the floor (in kinetic signs means a sharp protest or disagreement with someone’s will),
or a strong blow of the hand on the table (in kinetic signs it means a protest against noisy behavior and the request for silence immediate) in the deaf community they serve to draw attention to themselves before the transmission of information, because the vibration of the floor with the footstep or the noise generated when the hand hits the table can be picked up by a deaf person through acoustic means or vibrational.