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New signs and accessibility

AP -- A new system of sign language developed by deaf children in Nicaragua may hold clues about the evolution of languages. When the country's first school for the deaf was established in 1977, children were not taught sign language but developed a system of signs to communicate. Childhood learning may determine linguistic rules.

They found that older students used hand signals resembling the gestures employed by hearing people, mimicking the entire event physically. But younger pupils - who had interacted with other deaf children from an early age - used a more complex series of signs. They split the scene into component parts and arranged these sequentially to convey the incident. The constructions resemble the way words and sentences are built in verbal languages, using segments structured in a linear fashion. This indicates that way the younger children learnt the sign language helped reshape it according to these linguistic rules.

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