The first article was not about the origin of language, rather how children created a new
sign language. The children were not totally isolated from language, they were around other signing children and it didn't mention what influence there was from parents. Also, the capacity for children to communicate is built in.
"So what they're doing looks very language-like and does not look gesture-like, even though they're taking gestures to make the language. And that tells me there's something really core about that drive," Senghas said.
The article went on to says "Thus, parents may not need to worry too much about teaching children to talk by a certain age or using special tools like flashcards or vocabulary drills, she said. All they need is natural social interaction"
Whoever said that doesn't know much about the neuralplasticity of children or speech therapy.
The second article actually dealt with the origin of language, but said this: "Many more studies of language acquisition will have to be carried out before the structure of creole languages can be firmly accepted as the basis of first-language acquisition."
Language is a gift from God not a byproduct of evolution. What separates us from other animals is an alphabet, Words, and sentences (syntax plus grammar).
Communication and language are different things.
Similarity: Both are composed of SIGNS (forms with meaning)
Six Key Differences:
1. Animal: The signs of animal systems are inborn.
Human: The capacity to be creative with signs is inborn,
but the signs (words) themselves are acquired culturally.
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2. Animal: Communication is set responses to stimuli (indexes).
Human: Not limited to use as an index.
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3. Animal: Each sign has one and only one function; each meaning can be expressed only in one way
Human: Signs often have multiple functions; one meaning can be expresses in many ways
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4. Animal: Not naturally used in novel way
Human: Creative, can be adapted to new situations
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5. Animal: Closed inventory of signs; only a set number of different messages can be sent
Human: Open ended. Grammar (rules of syntax) allows a virtually unlimited number of messages to be constructed
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6. Animal: Change extremely slowly, with the speed of genetic evolution.
Human: Change rapidly as a cultural phenomenon."
http://pandora.cii.wwu.edu/vajda/ling201/test1materials/Animalchart.htm
More differences between forms of communication and human language:
Design features of Language:
Charles Hockett, linguist, believed that there existed 16 features of human language that distinguished human communication from that of animals. Charles Hockett also articulated that even the most basic human languages contained all 16 features. While the list initially contained 13 features, in a subsequent article Hockett expanded his list with three more features, for a total of sixteen:
Vocal-Auditory Channel – Spoken language is produced in the vocal tract and transmitted/heard as sound, whereas sign language is produced with the hands and transmitted by light.
Broadcast transmission and directional reception – The audible sound of language is heard in all directions but listeners will interpret it as coming from one specific direction.
Rapid fading – The sound made by speech diminishes quickly after being released.
Interchangeability – The speaker has the ability to receive and also send the same message.
Total feedback – Individuals are able to hear and internalize a message they have sent.
Semanticity – Speech sounds can be linked to specific meanings.
Arbitrariness – There is no direct connection between the signal and its meaning.
Discreteness – Each unit of communication can be separated and unmistakable.
Specialization – Speech is produced for communication, not chiefly for some other function, such as echolocation.
Displacement – The ability to talk about things that are not physically present.
Productivity – The ability to create new messages by combining already-existing signs.
Traditional transmission – The learning of language occurs in social groups.
Duality of patterning – Meaningful signs (words) are made of—and distinguished from one another by—meaningless parts (sounds, letters). A finite number of meaningless parts are combined to make a potentially infinite number of meaningful utterances.[1]
Prevarication – The ability to make false statements (to lie). Involves the purposeful manipulation of a given shared communication system in order to fool other members of the communicating group.
Reflexiveness – Language can be used to refer to (i.e., describe) itself.
Learnability – Speakers of one language can learn to speak another.
It was Hockett's belief that the first nine features were characteristics of communication held by all primates. Hockett determined that the last seven features are what distinguishes human language from all others.
http://en.wikipedia.org/wiki/Design_features_of_language