Just because they can’t talk back, doesn’t mean they don’t know what you’re saying.
Researchers at the University of Pennsylvania have discovered that infants between the ages of six and nine months can grasp meanings of common words long before they can speak them.
"I think it’s surprising in the sense that the kids at this age aren’t saying anything, they’re not pointing, they’re not walking," said Elika Bergelson, one of the researchers. "But actually, under the surface, they’re trying to put together the things in the world with the words that go with them.”