首页
登录
职称英语
Back in 1975, economists plotted rising life expectancies against countries’
Back in 1975, economists plotted rising life expectancies against countries’
游客
2023-06-26
44
管理
问题
Back in 1975, economists plotted rising life expectancies against countries’ wealth, and concluded that wealth itself increases longevity. It seemed self-evident: everything people need to be healthy—from food to medical care— costs money.
But soon it emerged that the data didn’t always fit that theory. Economic upturns didn’t always mean longer lives. In addition, for reasons that weren’t clear, a given gain in gross domestic product (GDP) caused increasingly higher gains in life expectancy over time, as though it was becoming cheaper to add years of life. Moreover, in the 1980s researchers found gains in literacy were associated with greater increases in life expectancy than gains in wealth were. Finally, the more educated people in any country tend to live longer than their less educated fellow citizens. But such people also tend to be wealthier, so it has been difficult to untangle which factor is increasing lifespan.
Wolfgang Lutz and his colleagues have now done that by compiling average data on GDP per person, lifespans, and years of education from 174 countries, dating from 1970 to 2010. They found that, just as in 1975, wealth correlated with longevity. But the correlation between longevity and years of schooling was closer, with a direct relationship that did not change over time, the way wealth does. When the team put both these factors into the same mathematical model, they found that differences in education closely predicted differences in life expectancy, while changes in wealth barely mattered.
Lutz argues that because schooling happens many years before a person has attained their life expectancy, this correlation reflects cause: better education drives longer life. It also tends to lead to more wealth, which is why wealth and longevity are also correlated. But what is important, says Lutz, is that wealth does not seem to be driving longevity, as experts thought—in fact, education is driving both of them.
He thinks this is because education permanently improves a person’s cognitive abilities, allowing better planning and self-control throughout the rest of their life. This idea is supported by the fact that people who are more intelligent appear to live longer. [br] What did Wolfgang Lutz and his colleagues find?
选项
A、Relationship between education and longevity changed over time.
B、Longevity and education were more closely correlated.
C、Differences in wealth predicted differences in longevity.
D、Wealth and longevity did not have any correlation.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2783471.html
相关试题推荐
Directions:Nowadaysmigratingtoforeigncountrieshasbecomeapopulartre
[originaltext][22]Anelderlywomanyesterdaymadealegalclaimagainstad
[originaltext][22]Anelderlywomanyesterdaymadealegalclaimagainstad
[originaltext][21]Oneofthecomplaintsofcityresidents,notsurprisingly
[originaltext][21]Oneofthecomplaintsofcityresidents,notsurprisingly
Threekeyfactsaboutrisingsealevelsneedtobepointedouttotheworld’
Threekeyfactsaboutrisingsealevelsneedtobepointedouttotheworld’
Threekeyfactsaboutrisingsealevelsneedtobepointedouttotheworld’
Forcenturies,inthecountriesofsouthandSoutheastAsiatheelephanthas
Forcenturies,inthecountriesofsouthandSoutheastAsiatheelephanthas
随机试题
MarkKellyisoriginallyfromLancashireinEngland.HehasbeenlivinginJ
AidEducationinChina1.每年有许多优秀大学生去贫困地区支教2.支教活动的意义3.你的看法Collegestudents
一、考题回顾 二、考题解析 【教学过程】 (一)导入新课 教师通
对工程质量事故的处理,监理机构最主要的工作就是( )。A.组织质量事故的调查处
根据《药品召回管理办法》,药品召回的主体是A.药品经营企业B.药品生产企业C.医
Thechangeinthatvillagewasmiraculou
A.一定升高 B.一定降低 C.保持不变 D.升高或降低由橡皮筋的劲度系数
下面情况发生了学习的是( )。 A.小李从亮处走进暗室,视力显著提高
中小学德育工作的任务和内容。
4个月婴儿可添加的辅食为 A.肝泥 B.水果泥 C.蛋泥 D.稀饭 E
最新回复
(
0
)