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Watching TV May Hamper Babies' Language Development: Study
"Audible television clearly reduces speech for both infants and their caregivers within the home and this is potentially harmful for babies' development," said University of Washington professor of pediatrics Dimitri Christakis, who led the study.
The study found that for every hour that the television is on with the volume turned up in a household with small children, the children heard between 500-1,000 fewer words from adults.
"Adults typically utter approximately 941 words per hour. Our study found that adult words are almost completely eliminated when television is audible to the child," said Christakis.
"These results may explain the association between infant television exposure and delayed language development," Christakis said.
Constant exposure to television could also explain attentional and cognitive delays in children, he said, since language development is believed to be key in brain development in early childhood.
For the study, 329 children ranging in age from two months to four years wore special vests with a chest pocket that held a small digital recorder.
The children wore the vests on random days for up to two years. The recorder captured everything the child said and heard during continuous 12 to 16 hour periods, and was only removed when the child napped or slept, was bathed or went for a ride in the car.
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