People assume that there is a genetic or biological basis for language among humans.
This can be seen in the unique shape of our vocal tract, which is different that of similar animals such as the chimpanzee.
Our vocal tract is somewhat bend, and the larynx or voice box exits into pharynx.
This allows for more resonance, more control over the sound produced, and wider range of sound.
Yet at the same time it has some drawbacks. It increases the danger of choking on good or suffocating if the breathing passages are blocked.
We must assume that the capacity for speech makes up for these advantages. People should distinguish between the capacity speech and capacity for language.
Several researchers have tried to teach chimpanzee to talk.
In 1940s there were two researchers Keith and Catharine Hayes tried to teach a chimp name Viki to speak.
Viki learn 3 words – mama, papa, and cup – but only with great difficulty. It was clear from her interactions with the Hayeses that she knew what a number of other words meant, but she could not learn to speak them.
Capacity of Language
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