标题: 求助一道manhattan模考的CR [打印本页] 作者: 123SherryGo 时间: 2016-10-11 10:06 标题: 求助一道manhattan模考的CR Child development specialists have observed that adolescents who receive large weekly allowances tend to spend money on items considered frivolous by their parents whereas adolescents who receive small weekly allowances do not. Thus, in order to ensure that their children do not spend money on frivolous items, parents should not give their children large weekly allowances.
Which of the following pieces of information would be most useful in evaluating the validity of the conclusion above?
(A) The average amount of money received by adolescents who receive large weekly allowances
(B) Any differences among parents in the standard used to judge an item as frivolous
(C) The educational background of the child development specialists who made this observation
(D) The difference between the average annual income of families in which the parents give their children large weekly allowances and that of families in which the parents give their children small weekly allowances
(E) The percentage of adolescents who receive no weekly allowance
The conclusion of the passage is that parents can ensure that their children will not spend money on frivolous items by limiting their children's allowances. This claim is based on the observed difference between the spending habits of children who receive large allowances and those of children who receive small allowances. The argument assumes that the high dollar amount of the allowance – as opposed to some other unobserved factor – is directly linked to the fact that children spend the money on items their parents consider frivolous. Information that provides data about any other factor that might be the cause of the children's spending behavior would help to evaluate the validity of the conclusion.
(A) The actual dollar amount received by adolescents who receive large weekly allowances is not related to the conclusion of the passage. Whether this amount is $40 or $10, the key is that it is considered by the child development specialists to be a "large" weekly allowance.
(B) CORRECT. One alternative to the conclusion of the passage is that the standard used to judge an item as frivolous was much lower for parents who gave their children large weekly allowances than for parents who gave their children small weekly allowances. If for example, the former group of parents considered all movie tickets to be frivolous, while the latter did not, then this fact (and not the difference in allowance money) might explain the difference observed by the child development specialists. Thus, information about any differences among parents in the standard used to judge an item as frivolous would be extremely relevant in evaluating the validity of the conclusion of the passage.
(C) The background of the child development specialists who made the observation has no bearing on the conclusion. The conclusion is based on the observation, not on the credentials of those making the observation.
(D) Family income differences have no clear relevance to the link posited between high allowances and spending on frivolous items.
(E) Adolescents who receive no weekly allowance play no role in the argument. Thus, information about this group of adolescents has no relationship to the conclusion of the passage.作者: 123SherryGo 时间: 2016-10-11 16:16
自己顶顶！！！求NN啊作者: 123SherryGo 时间: 2016-10-11 16:17
不知大牛们都什么时候出没作者: cycgundam 时间: 2018-5-7 06:20
偶尔看到这道题，说说自己思路（我是在搜manhattan GMAT的资料）：
D）给零花钱的家庭收入差异。这点其实很接近，但是还不够接近，所以它和命题的逻辑还是有代沟。家庭收入不管高还是低，关键信息-给adolescent的零花钱数量不会被动摇，基于这个信息的结论（无论对错与否）都不会受到影响。如果题目中所谓的large allowance改成allowance based on house income percentage，那么这个选项或许会很接近。
