To the excent that the higher earnings of college graduates reflects their greater ability rather than schooling,the rate of return is overstated.
Omission of ability biases the rate of return estimates by a small amount.
The screening hypothesis argues that schooling increases earnings not by increaing productivity but providing a way to identify high quality workers.
A more sontroversial issue was Becker"s conclusion that parents often act altruistically towards selfish children by highly investing in a child in an effort to indirectly save for old age .
Becker believed that the rate of return from investing in children was often greater than normal retirement savings.However ,parents can not know for sure that the child will take care of them .Since they cannot legally bind a child to care for them they often reasort to manipulation through instilling a sense of "guilt ,obligation ,duty ,and filial love that indirectly ,but still very effectively .......commits children to helping them out ."Becker even went so far as to say that social security can cause families to be less interdependent by removing the motivation of parents to use altruistic behaviors in motivating their children to care for them.
更高的收益很大程度上反映了大学毕业生更大的能力而不是受教育,回报率被夸大了。
To the excent that the higher earnings of college graduates reflects their greater ability rather than schooling,the rate of return is overstated.
大学毕业生的更高收入越是反映他们的能力而非教育，回报率被夸大了；
Omission of ability biases the rate of return estimates by a small amount.
忽视这个方面（能力的影响）导致我们对回报率的估计出现了一个小额偏差；
The screening hypothesis argues that schooling increases earnings not by increaing productivity but providing a way to identify high quality workers.
筛选假说认为教育是并非通过提高生产力而提高收入的，而是通过提供了一种分辨出高质量工人的途径来提高收入的。
A more sontroversial issue was Becker"s conclusion that parents often act altruistically towards selfish children by highly investing in a child in an effort to indirectly save for old age .
一个富有争论的问题（这里是controversial,英文作者不小心出现个typo很正常事)是贝克尔认为父母对于那些年纪尚小还不懂回报父母的孩子的无私照顾行为来源于他们养儿防老的想法。
Becker believed that the rate of return from investing in children was often greater than normal retirement savings.However ,parents can not know for sure that the child will take care of them .Since they cannot legally bind a child to care for them they often reasort to manipulation through instilling a sense of "guilt ,obligation ,duty ,and filial love that indirectly ,but still very effectively .......commits children to helping them out ."Becker even went so far as to say that social security can cause families to be less interdependent by removing the motivation of parents to use altruistic behaviors in motivating their children to care for them.
贝克尔认为投资于子女的回报率往往会超过通常退休储蓄的回报率，但父母并不能确切知道小孩会一定照顾他们。因为他们不能合法保证一个孩子会照顾他们，他们往往会采用对小孩灌输一些。。。。的道德思想教育（家教）来。。。。
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