WEDNESDAY, Feb. 15 (HealthDay News) -- Babies can understand many words sooner than they can actually say them, a new study indicates.
Researchers from the University of Pennsylvania say 6- to 9-month old babies learn the meaning of the words for certain foods and body parts through their daily exposure to language. They said most psychologists don't think this type of word comprehension is possible until a child is closer to 1 year.
"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 the study's co-author, Elika Bergelson, a doctoral student in Penn's department of psychology, in a university news release. "But actually, under the surface, they're trying to put together the things in the world with the words that go with them."
In conducting the study, researchers had 33 babies between 6 and 9 months old view a screen with a picture of a food and a body part while sitting with their parents. The parents were given phrases to say to the child, asking them to find the apple, for instance. An eye-tracking device revealed the babies' responses to the phrases.
In a second test, the children went through the same process but saw pictures of typical food scenes and a whole person, not just body parts.
After taking into account possible reasons for errors or distraction among the babies, the researchers compared the responses of the 6- to 9-month-old infants with those of 50 other babies ranging from 10 to 20 months of age.
In both tests, the researchers found the 6- to 9-month-olds looked more often at the picture that was named than any other images. The researchers argued this was a sign that they knew what the word meant.
"There had been a few demonstrations of understanding before, involving words like 'mommy' and 'daddy,'" study co-author, Daniel Swingley, an associate professor in the psychology department, sai
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