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23 May 2022, 06:54
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woohoo921
As you suggest, just because an answer choice seriously undermines an explanation doesn't mean it totally demolishes that explanation. In this case, as long as we've found the answer choice that undermines the explanation more than all the others, we can be confident it's correct.
That being said, it's hard to imagine how the explanation and answer choice (A) could be true at the same time. The explanation claims there was "increased competition" for employees with college degrees between 1980 and 1990. On the other hand, (A) claims that during that same period, a "growing percentage" of college graduates couldn't find jobs that required a college degree. So even if it were a very small percentage, it's hard to see how that percentage could be "growing" if competition for college graduates was also "increasing."
I hope that helps!
09 Oct 2022, 00:36
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Dear experts,
I have a question in the correct option (A)
The difference in average annual income in favor of employees who have college degrees, compared with those who do not have such degrees, doubled between 1980 and 1990. Some analysts have hypothesized that increased competition between employers for employees with college degrees drove up income for such employees.
Which of the following, if true, most seriously undermines the explanation described above?
(A) During the 1980s a growing percentage of college graduates, unable to find jobs requiring a college degree, took unskilled jobs.
(B) The average age of all employees increased slightly during the 1980s.
(C) The unemployment rate changed very little throughout the 1980s.
(D) From 1980 to 1990 the difference in average income between employees with advanced degrees and those with bachelor???s degrees also increased.
(E) During the 1980s there were some employees with no college degree who earned incomes comparable to the top incomes earned by employees with a college degree.
the conclusion of the passage is : increased competition between employers for employees with college degrees drove up income for such employees.
(A) does weaken the conclusion because (A) A provides that there are many colleges grads or at least the number of colleges grad are growing up. But doesn't it conflict with the premise : The difference in average annual income in favor of employees who have college degrees, compared with those who do not have such degrees, doubled between 1980 and 1990. ?
If the growing number of grads took the unskilled job, we can expect that the average salary will go down. Thus, the average salary between college grads and non-grad shouldn't be doubled. Why is (A) correct?
I have a question in the correct option (A)
The difference in average annual income in favor of employees who have college degrees, compared with those who do not have such degrees, doubled between 1980 and 1990. Some analysts have hypothesized that increased competition between employers for employees with college degrees drove up income for such employees.
Which of the following, if true, most seriously undermines the explanation described above?
(A) During the 1980s a growing percentage of college graduates, unable to find jobs requiring a college degree, took unskilled jobs.
(B) The average age of all employees increased slightly during the 1980s.
(C) The unemployment rate changed very little throughout the 1980s.
(D) From 1980 to 1990 the difference in average income between employees with advanced degrees and those with bachelor???s degrees also increased.
(E) During the 1980s there were some employees with no college degree who earned incomes comparable to the top incomes earned by employees with a college degree.
the conclusion of the passage is : increased competition between employers for employees with college degrees drove up income for such employees.
(A) does weaken the conclusion because (A) A provides that there are many colleges grads or at least the number of colleges grad are growing up. But doesn't it conflict with the premise : The difference in average annual income in favor of employees who have college degrees, compared with those who do not have such degrees, doubled between 1980 and 1990. ?
If the growing number of grads took the unskilled job, we can expect that the average salary will go down. Thus, the average salary between college grads and non-grad shouldn't be doubled. Why is (A) correct?
27 Oct 2022, 07:24
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Tanchat
First, you're correct that we should take the premise of the question as true. In other words, the difference between the income of employees with and without college degrees really did double between 1980 and 1990.
Now, you raise an interesting question: if a growing percentage of college graduates couldn't find jobs that required college degrees, would that mean their incomes went down? Unfortunately, the question doesn't provide enough information to answer this question. They definitely could go down. On the other hand, if some unskilled jobs paid more than jobs that required college degrees, incomes of college graduates could certainly go up. Either way, with the information we're given, we really can't say.
Luckily, however, we don't need to answer that question. We know the premise has to be true, so the only question we need to answer is how does (A) affect the conclusion. And keep in mind that we won't need any outside knowledge to answer the question. Everything we need has to be contained in the question itself.
So how does (A) affect the argument? Well, as we've established, we can't really say how it affects overall income among college graduates (though again, that isn't really relevant). But it definitely suggests that competition for employees with college degrees wasn't increasing during the 1980's. And for that reason, (A) undermines the argument.
I hope that helps!
