首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Many countries have made it illegal to talk into a hand-held mobile phone while driving. But the latest research provides furthe
Many countries have made it illegal to talk into a hand-held mobile phone while driving. But the latest research provides furthe
admin
2013-09-04
55
问题
Many countries have made it illegal to talk into a hand-held mobile phone while driving. But the latest research provides further confirmation that the danger lies less in what a motorist’s hands do when he takes a call than in what the conversation does to his brain. Even using a "hands-free" device can impair a driver’s attention to an alarming extent.
Melina Kunar of the University of Warwick and Todd Horowitz of the Harvard Medical School ran a series of experiments in which two groups of volunteers had to pay attention and respond to a series of moving tasks on a computer screen that were reckoned equivalent in difficulty to driving. One group was left undistracted while the other had to engage in a conversation about their hobbies using a speakerphone. As Dr. Kunar and Dr. Horowitz report in Psychonomic Bulletin & Review, those who were making the equivalent of a hands-free call had an average reaction time 212 milliseconds slower than those who were not. That, they calculate, would add 5.7 meters to the braking distance of a car traveling at 100 kph. They found that the group using the hands-free kit made 83 percent more errors in their tasks than those who were not talking.
They also explored the effect of simply listening to something—such as a radio programme. For this they played a recording of the first chapter of Bram Stoker’s "Dracula." Even though the test subjects were told to pay attention because they would be asked questions about the story afterwards, it had little effect on their reaction time. The research led by Frank Drews of the University of Utah suggests the same thing is true of the idle chatter of a passenger. Dr. Kunar reckons that having to think about responses during a phone conversation competes for the brain’s resources in a way that listening to a monologue does not.
Punishing people for using hand-held gadgets while driving is difficult enough, even though they can be seen from outside the car. Stopping people making hands-free calls would probably be impossible—especially because more and more vehicles are now being fitted with the necessary equipment as standard. Persuading people to switch their phones off altogether when they get behind the wheel might be the only answer. Who knows, they might even come to enjoy not having to take calls. And they’ll be more likely to arrive in one piece.
In Kunar and Horowitz’s experiments, the subjects who performed tasks while talking______.
选项
A、reacted more quickly and made fewer mistakes
B、reacted more quickly, but made more mistakes
C、reacted more slowly, but made fewer mistakes
D、reacted more slowly and made more mistakes
答案
D
解析
第二段Kunar和Horowitz的实验显示,在完成任务同时需要分心说话的受试者反应速度平均慢212毫秒,而且错误率也高出83%。
转载请注明原文地址:https://kaotiyun.com/show/5BHO777K
0
研究生英语学位课统考(GET)
相关试题推荐
Some23millionadditionalU.S.residentsareexpectedtobecomemoreregularusersoftheU.S.healthcaresysteminthenext
Atsomepointinyourlife,youhavelikelyheardacharacteronTVorinabooksaysomethingalongthelinesof,"Thethingth
Itisallverywelltoblametrafficjams,thecostofpetrolandthequickpaceofmodernlife,butmannersontheroadsarebe
Canelectricitycausecancer?Inasocietythatliterallyrunsonelectricpower,theveryideaseemspreposterous.Butformore
Therelationshipbetweenformaleducationandeconomicgrowthinpoorcountriesiswidelymisunderstoodbyeconomistsandpoliti
Scienceandpoliticsmakeuncomfortablebedfellows.Rarelyisthismoretruethaninthecaseofclimatechange,whereitisnow
For150yearsscientistshavetriedtodeterminethesolarconstant,theamountofsolarconstantenergythatreachestheEarth.
Americansnolongerexpectpublicfigures,whetherinspeechorinwriting,tocommandtheEnglishlanguagewithskillandgift.
TheUnitedStatesisacountrymadeupofmanydifferentraces.Usuallytheyaremixedtogetherandcan’tbetoldfromoneanoth
AbudgetapprovedbytheEuropeanParliamentfortheEuropeanEconomicCommunitywasdeclaredadoptedTuesdaydespiteopposition
随机试题
Hecametothedecision______hemustactatonce.
A.灯心草与通草B.大黄炭、黄芩炭与黄柏炭C.地骨皮、千年健与五加皮D.焦麦芽、焦山楂、焦神曲E.熟地黄、龙眼肉应放在斗架的较低层的是()。
患者男,27岁,用力排便后肛门剧烈疼痛,伴滴少量鲜血。肛门检查:截石位6点位见一暗红色柔软团状物。以下对该患者的护理中错误的是()
()是组成社会的基本单元,也是社会消防管理的基本单元。
在Word中,下列操作不能实现的是()。
2018年5月2日,习近平总书记在北京大学师生座谈会上的讲话中指出,评价教师队伍素质的第一标准应该是()。
人民警察纪律的侧重点是警民关系,是对人民警察在履行职责的基础上提出的进一步的要求,即履行职责的职业道德要求。()
下列表达式中,表达式返回结果为.F.的是
Manypeople,particularlyrecentcollegegraduates,dreamofowningtheirownbusinesses.Althoughsuchventuresareoftenexcit
Organisedvolunteeringandworkexperiencehaslongbeenavitalcompaniontouniversitydegreecourses.Usuallyitislefttoe
最新回复
(
0
)