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Too Much Screen Time Can Threaten Attention Span Too much time spent watching television and playing video games can double the risk of attention problems in children and young adults, new research finds. The study is the latest of many to point out the ill effects of excessive screen time, whether at the computer or the television. Researcher Edward Swing, a graduate student at Iowa State University, compared participants who watched TV or played video games less than two hours a day—the recommendation from the American Academy of Pediatrics for children aged 2 and older—to those who watched more. “Those who exceeded the AAP recommendation were about 1.6 times to 2.2 times more likely to have greater than average attention problems,” he said. Middle school students spent an average of 4.26 hours a day watching TV or playing video games, the study found, while older students spent 4.82 hours daily. Previous studies have also linked screen time with attention problems. “This is an important finding,” according to Dr. Dimitri Christakis, the George Adkins Professor of Pediatrics at the University of Washington in Seattle. He, too, has researched the topic. “ADHD (attention-deficit hyperactivity disorder) is 10 times more common today than it was 20 years ago,” he said. “Although it is clear that ADHD has a genetic basis, given that our genes have not changed appreciably in that timeframe, it is likely that there are environmental factors that are contributing to this rise.” He and other experts suspect excessive media as a contributor.
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在屏幕前時間過長可能威脅注意力的持續(xù)時間 新的研究發(fā)現(xiàn)，花太多的時間看電視和玩電子游戲會使兒童和年輕人罹患注意力問題的風險翻一番。這項研究是許多類似研究中最新的一個，它指出無論是在電腦前還是電視前，對著屏幕時間過長會產生不良影響。 研究員愛德華-斯文是愛荷華州立大學的研究生，他對每天看電視或玩電子游戲少于兩小時的被調查者（美國兒科學會建議，兩歲和兩歲以上的孩子每天在屏幕前的時間不要超過兩小時）和多于兩小時的被調查者之間進行了比較?！澳切┏^該學會建議的時間約1.6倍到2.2倍的人更有可能產生注意力問題，”他說。 研究發(fā)現(xiàn)，中學生平均每天花4.26小時看電視或玩電子游戲，年紀大一些的學生每天要花4.82小時。之前的研究也將花在屏幕前的時間與注意力問題掛鉤。 “這是一個重要的發(fā)現(xiàn)，”美國西雅圖華盛頓大學喬治-阿德金斯兒科教授、醫(yī)生迪米特里-克里斯塔聲稱。他也研究過該課題?！叭缃穸鄤影Y（注意力缺陷多動障礙）的發(fā)病率是二十年前的10倍，”他說?！半m然很清楚，多動癥有遺傳基礎，因為我們的基因在這一段時間內并沒有明顯的改變，但很可能還有一些環(huán)境因素促成了這一增長?！彼推渌麑＜覒岩桑罅康拿襟w是造成這一現(xiàn)象的原因之一。
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（來源：英語學習雜志）
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