Monkeys fluent in baby talk: Discovery suggests that man's ga-ga-goo-gooing might be biological in origin, scientists say.

Chicago Tribune (Chicago, IL) | August 24, 2007 | Copyright

Byline: William Mullen

Aug. 24--Adult rhesus macaques make high-pitched, sing-songy vocalizations when they encounter infant monkeys -- just the kind of sounds humans seem to naturally fall into using around infants, scientists reported this week.

Seeing the adult monkeys use a form of baby talk suggests the behavior in humans may be biological in origin, said Dario Maestripieri, associate professor of comparative human development at the University of Chicago.

In monkeys the vocalizations are called "girneys," a sound completely different from ...

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