A study by Frederick J. Zimmerman, Ph.D., and Dimitri A Christakis, M.D., M.P.H. (of the University of Washington, Seattle) in the July issue of Archives of Pediatrics & Adolescent Medicine seems to be the most recent data. As I suspected, the report comes out almost totally againt TV – claiming specifically that “there are modest adverse effects of television viewing before age 3 years on the subsequent cognitive development of children.”
Before age 3, the children in the study watched and average of 2.2 hours a day, and at age 3 to 5 they watched 3.3. hours. The authors conclude that each hour of daily TV viewing before age 3 “was associated with deleterious effects” on the Peabody Individual Achievement Test Reading Recognition Scale, on the Peabody Reading Comprehension Scale and on the Memory for Digit Span assessment from the Wechsler Intelligence Scales for Children. A “beneficial effect of television at ages 3-5 years” was identified for the Reading Recognition Scale score only. The authors write: "This analysis has shown a consistent pattern of negative associations between television viewing before age three years and adverse cognitive outcomes at ages six and seven years.”
So, there are some domains for which TV viewing for preschool kids can be constructive, but when it comes to babies, the effects are all negative.
I’m not sure how much TV I watched as a small child – I know my mom let us watch Sesame Street and Electric Company – but it probably had something to do with my short attention span (for everything other than email – the ultimate short attention span activity).
Some other great books I’m reading about early cognitive development and the relationship between television and learning:
The Scientist in the Crib by Alison Gopnick, Andrew N. Meltzoff and Patricia K. Kuhl
What’s Going on in There? by Lisa Eliot
Endangered Minds: Why Children Don't Think And What We Can Do About It by Jane M. Healy