青少年更频繁地使用电脑引起顾虑-凯发k8官网

青少年更频繁地使用电脑引起顾虑
文章来源:未知 文章作者:enread 发布时间:2011-04-26 03:29 字体: [ ] 
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researchers at queen's university have found a strong association between computer and internet use in adolescents and engagement in multiple-risk behaviours (mrb), including 1(违法的) drug use, drunkenness and unprotected sex. "this research is based on social 2 theory, which suggests that seeing people engaged in a behaviour is a way of learning that behaviour," explains lead researcher valerie carson, a doctoral candidate in school of kinesiology and health studies. "since adolescents are exposed to considerable screen time—over 4.5 hours on average each day—they're constantly seeing images of behaviours they can then potentially adopt."

the researchers found that high computer use was associated with approximately 50 per cent increased engagement with a cluster of six mrb, including smoking, drunkenness, non-use of seatbelts, cannabis(大麻) and illicit drug use, and unprotected sex. high television use was also associated with a modestly increased engagement in these mrb.

one explanation behind this finding is that a considerable amount of 3 that used to be shown on tv is now being shown on the internet. in addition, computer usage by adolescents has increased 4 in recent years.

"tv and video games have more established 5 in terms of censorship(审查制度) , but internet protocols aren't as established," says ms carson. "parents can make use of programs that control access to the internet, but adolescents in this age group are quite 6 about technology and the internet. it's possible that these types of controls aren't effective in blocking all 7 websites."

this research, recently published in the journal of preventative medicine, suggests that future studies should examine the specific content adolescents are being exposed to in order to help strengthen current screen time guidelines for youth.



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1 by8yn     
adj.非法的,禁止的,不正当的
参考例句:
  • he had an illicit association with jane.他和简曾有过不正当关系。
  • seizures of illicit drugs have increased by 30% this year.今年违禁药品的扣押增长了30%。
2 uqwz0     
adj.认知的,认识的,有感知的
参考例句:
  • as children grow older,their cognitive processes become sharper.孩子们越长越大,他们的认知过程变得更为敏锐。
  • the cognitive psychologist is like the tinker who wants to know how a clock works.认知心理学者倒很像一个需要通晓钟表如何运转的钟表修理匠。
3 1zjzi3     
n.广告业;广告活动 a.广告的;广告业务的
参考例句:
  • can you give me any advice on getting into advertising? 你能指点我如何涉足广告业吗?
  • the advertising campaign is aimed primarily at young people. 这个广告宣传运动主要是针对年轻人的。
4 0ywyq     
adv.极大地;相当大地;在很大程度上
参考例句:
  • the economic situation has changed considerably.经济形势已发生了相当大的变化。
  • the gap has narrowed considerably.分歧大大缩小了。
5 66203c461b36a2af573149f0aa6164ff     
n.礼仪( protocol的名词复数 );(外交条约的)草案;(数据传递的)协议;科学实验报告(或计划)
参考例句:
  • there are also protocols on the testing of nuclear weapons. 也有关于核武器试验的协议。 来自辞典例句
  • hardware components and software design of network transport protocols are separately introduced. 介绍系统硬件组成及网络传输协议的软件设计。 来自互联网
6 3ckzv     
v.知道,了解;n.理解能力,机智,悟性;adj.有见识的,懂实际知识的,通情达理的
参考例句:
  • she was a pretty savvy woman.她是个见过世面的漂亮女人。
  • where's your savvy?你的常识到哪里去了?
7 zp0yb     
adj.不受欢迎的,不良的,不合意的,讨厌的;n.不受欢迎的人,不良分子
参考例句:
  • they are the undesirable elements among the employees.他们是雇员中的不良分子。
  • certain chemicals can induce undesirable changes in the nervous system.有些化学物质能在神经系统中引起不良变化。
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