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動物能明白人類的語言嗎?
[ 2007-08-10 09:49 ]

在童話故事中,人和動物總是能交流的。那么,動物真的能夠明白人類的語言嗎?一些科學研究證實,至少一些動物能分辨人類的語言。

Rats can use the rhythm of human language to tell the difference between Dutch and Japanese, researchers in Spain reported.

Their study suggests that animals, especially mammals, evolved some of the skills underlying the use and development of language long before language itself ever evolved, the researchers said.

It is the first time an animal other than a human or monkey has been shown to have this skill.

For their study neuroscientists Juan Toro and colleagues at Barcelona's Scientific Park tested 64 adult male rats.

They used Dutch and Japanese because these languages were used in earlier, similar tests, and because they are very different from one another in use of words, rhythm and structure.

The rats were trained to respond to either Dutch or Japanese using food as a reward.

Then they were separated into four groups -- one that heard each language spoken by a native, one that heard synthesized speech, one that heard sentences read in either language by different speakers and a fourth that heard the languages played backwards.

Rats rewarded for responding to Japanese did not respond to Dutch and rats trained to recognize Dutch did not respond the spoken Japanese.

The rats could not tell apart Japanese or Dutch played backwards.

"Results showed that rats could discriminate natural sentences when uttered by a single speaker and not when uttered by different ones, nor could they distinguish the languages when spoken by different people," the researchers wrote.

Human newborns have the same problem, although tamarins can easily tell languages apart even when spoken by different people, the researchers said.

The study shows "which abilities that humans use for language are shared with other animals, and which are uniquely human. It also suggests what sort of evolutionary precursor's language might have.

(來源:國際在線 英語點津 Annabel 編輯)

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