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Too much television can be detrimental for kids development, even when theyre not plopped directly in front of the screen. And your kids might be getting more exposure to such background TV than you think, a new study finds. The researchers found that the average American kid was exposed to 232.2 minutes of background television per daywhen the TV was on, but the child was engaged in another activity. Younger children and African-America children were exposed to the most background television on average. We were ready and willing to accept that the exposure would be high, but we were kind of shocked at how high it really was, says study author Matthew Lapierre, a doctoral candidate and lecturer at the University of Pennsylvanias Annenberg School for Communication. The fact that kids are exposed to about four hours on average per day definitely knocked us back on our heels a bit. knock back 使大吃一惊 Previous research has found that exposure to background television is linked to lower attention spans, fewer and lower-quality parent-child interactions and reduced performance in cognitive tasks, the authors said in the study. attention span 注意力持续时间 The current findings came from data gathered in a nationally representative telephone survey of 1,454 American parents with at least one child between the ages of 8 months and 8 years. The parents were asked about how often their TV was on when no one was watching and whether their child had a TV in their bedroom. | 
