Students asked by a psychologist to tell a lie before discussion groups vastly overestimated how many people in the discussion groups could tell they were lying. Other research has found that when volleyball players perform unusually poorly on the court, teammates notice this far less often than the players expect. Finally, in one research experiment a student wearing a funny T-shirt entered a room full of people. Questioning revealed that only a small fraction of the people in the room noticed the shirt, contrary to the student’s expectations.

Summary
Students asked to tell a lie in a discussion group overestimated how many people in the group could tell that they were lying. Similarly, volleyball players that perform unusually poorly expect teammates to notice this more than the teammates actually do. Finally, a student wearing a funny T-shirt was noticed only by a small number of people in a room, contrary to what the student expected.

Strongly Supported Conclusions
People tend to think that their appearance is noticed by others more often than what actually happens.

A
People tend to be far less aware of their own appearance and behavior than are other people.
This answer is anti-supported. We know from the stimulus that people tend to be more aware of their own appearance, not less aware.
B
People tend not to notice the appearance or behavior of others.
This answer is unsupported. It’s not that people in these experiments didn’t notice the appearance or behavior of others, it’s that there is a significant difference in perception. People perceive others to be aware of their appearance more often than others actually are.
C
We are actually less observant of the appearance and behavior of others than we think ourselves to be.
This answer is unsupported. This answer gets it “backwards” and is from the other perspective of whether a person accurately assesses how aware they are of other people.
D
People will notice the appearance or behavior of others only if it is specifically highlighted in some way.
This answer is unsupported. We don’t know from the stimulus what is necessary in order for others to notice a person’s appearance or behavior.
E
People tend to believe their appearance and behavior are noticed by others more often than is actually the case.
This answer is strongly supported. People generally over-expect others to notice their appearance or behavior.

5 comments

Carrots are known to be one of the best sources of naturally occurring vitamin A. However, although farmers in Canada and the United States report increasing demand for carrots over the last decade, the number of people diagnosed with vitamin A deficiency in these countries has also increased in that time.

"Surprising" Phenomenon
Why has the number of people diagnosed with vitamin A deficiency in the United States and Canada increased during the same period that farmers in these countries have reported increasing demands for carrots, which are one of the best sources of naturally occurring vitamin A?

Objective
The correct answer must be the only answer that doesn’t help to explain the vitamin A deficiency phenomenon.

A
The population has significantly increased in every age group.
If all age groups have become more populous, then age groups more likely to be diagnosed with vitamin A deficiency have become more populous. This would provide a possible explanation for the increase in people diagnosed with vitamin A deficiency.
B
The purchase of peeled and chopped carrots has become very popular, though carrots are known to lose their vitamins quickly once peeled.
People purchasing peeled and chopped carrots means these people are likely purchasing fewer whole carrots. Therefore, these people are likely to get less vitamin A in their diet, increasing the likelihood that they’d be diagnosed with vitamin A deficiency.
C
Certain cuisines that have become popular use many more vegetable ingredients, including carrots, than most cuisines that were previously popular.
If currently popular cuisines use more carrots than most previously popular cuisines, more people are likely eating carrots than previously. Therefore, (C) doesn’t explain the increase in people diagnosed with vitamin A deficiency and may even make the phenomenon more confusing.
D
Carrot consumption has increased only among those demographic groups that have historically had low vitamin A deficiency rates.
If the only people who increased their carrot consumption are those who were already unlikely to experience vitamin A deficiency, the increase in carrot consumption is unlikely to significantly lessen the number of people diagnosed with vitamin A deficiency.
E
Weather conditions have caused a decrease in the availability of carrots.
If fewer carrots are available to people, then it’s likely that fewer people are eating carrots, meaning people are likely getting less vitamin A in their diets. This would provide a possible explanation for the increase in people diagnosed with vitamin A deficiency.

19 comments

In contemplating major purchases, businesses often consider only whether there is enough money left from monthly revenues after paying monthly expenses to cover the cost of the purchase. But many expenses do not occur monthly; taking into account only monthly expenses can cause a business to overexpand. So the use of a cash-flow statement is critical for all businesses.

Summarize Argument
The author concludes that businesses must use a cash-flow statement. This is because expenses don’t always occur monthly, and only taking into account monthly expenses can cause businesses to overexpand.

Notable Assumptions
The author assumes that a cash-flow statement accounts for expenses that don’t occur monthly.

A
Only a cash-flow statement can accurately document all monthly expenses.
We need to know about non-monthly expenses.
B
Any business that has overexpanded can benefit from the use of a cash-flow statement.
We need to know why cash-flow statements are critical in the first place. Do they account for non-monthly expenses?
C
When a business documents only monthly expenses it also documents only monthly revenue.
We don’t care about revenue. We care about documenting non-monthly expenses.
D
A cash-flow statement is the only way to track both monthly expenses and expenses that are not monthly.
A cash-flow statement accounts for monthly and non-monthly expenses. This strengthens the author’s claim that a cash-flow statement solves the problem of accounting only for monthly expenses.
E
When a business takes into account all expenses, not just monthly ones, it can make better decisions.
Do cash-flow statements allow businesses to do this? We don’t know.

12 comments

We have an MBT question which we can glean from the question stem which reads: If the statements above are true, then on the basis of them which one of the following must also be true?

Our stimulus tells us that in the year 1990, the municipality of Queesnton raised taxes that increased the budget of its school system. The schools in turn used the increase in budget to increase the number of teachers they employed by 30%. However, the average number of students per teacher remained constant between 1990 and 1993.

This is almost phrased like an RRE question, right? It’s constructed as if there’s a paradox here. But let’s think about this: is it hard to reconcile the fact that the number of teachers went up while the average number of students to teachers stayed the same? No! Think about it: if the total number of dogs went up in NYC but the number of dogs per household stayed the same, would that make sense? Yes! It just means there are more households that own dogs. If we think about this as a fraction, both the numerator and denominator (top and bottom) of the fraction went up at the same rate. The same thing could be true for our students per teacher average, right? If the number of teachers went up and the number of students rose at the same rate (in this case 30%), then the average number of students per teacher would remain the same.

Ok now that we’ve synthesized the information here, let’s look at the answer choices:

Answer Choice (A) We need the classes to increase in enrollment because otherwise the number of students would remain constant while the number of teachers would increase. This would throw off our proportion so the average number of students per teacher would not remain the same.

Correct Answer Choice (B) This is exactly what we need. If the number of teachers goes up, we need the number of students to increase as well in order for the average number of students per teacher to remain the same.

Answer Choice (C) This is unsupported. We know that the increase in budget allowed the school district to hire more teachers, but it’s really immaterial how much the budget increased by. We already know the number of teachers increased, how the budget corresponds to that is not necessary for us to understand.

Answer Choice (D) There’s nothing to suggest that the district either retained old teachers or hired new teachers–the bottom line is that the number of teachers increased.

Answer Choice (E) This is completely unrelated to the ratio of students to teachers and is wholly unsupported by our passage.


3 comments

In early 1990, Queenston instituted a tax increase that gave its school system a larger operating budget. The school system used the larger budget to increase the total number of teachers in the system by 30 percent between 1990 and 1993. Nevertheless, there was no change in the average number of students per teacher between 1990 and 1993.

Summary
In 1990, Queenston instituted a tax increase that gave its school system a larger operating budget. The school system used the larger budget to increase the total number of teachers by 30 percent between 1990 and 1993. Nevertheless, the average number of students per teacher between 1990 and 1993 did not change.

Notable Valid Inferences
Between 1990 and 1993, the number of students in Queenston’s school system increased.

A
No classes in Queenston’s school system experienced an increase in enrollment between 1990 and 1993.
Must be false. If the number of teachers increased by 30 percent but the average student per teacher ratio did not change, then there must be more students and classes would experience an increase in enrollment.
B
The total number of students enrolled in Queenston’s school system increased between 1990 and 1993.
Must be true. If the number of teachers increased by 30 percent but the average student per teacher ratio did not change, then it must be true that the number of students also increased.
C
The operating budget of Queenston’s school system increased by exactly 30 percent between 1990 and 1993.
Could be false. We only know that Queestion’s school system increased the total number of teachers by 30 percent. We do not have any information in the stimulus that tells us what percentage the operating budget increased.
D
Most teachers who worked for Queenston’s school system in 1990 were still working for the system in 1993.
Could be false. We know that the total number of teachers increased, but this does not necessarily mean that most teachers stayed during this time period. It is possible that the school system had high teacher turnover and still increased the total number of teachers.
E
The quality of education in Queenston’s school system improved between 1990 and 1993.
Could be false. We don’t have any information in the stimulus about the quality of Queenston’s education. We cannot assume that because the total number of teachers increased, education quality improved as well.

Detailed Explanation

We have an MBT question which we can glean from the question stem which reads: If the statements above are true, then on the basis of them which one of the following must also be true?

Our stimulus tells us that in the year 1990, the municipality of Queesnton raised taxes that increased the budget of its school system. The schools in turn used the increase in budget to increase the number of teachers they employed by 30%. However, the average number of students per teacher remained constant between 1990 and 1993.

This is almost phrased like an RRE question, right? It’s constructed as if there’s a paradox here. But let’s think about this: is it hard to reconcile the fact that the number of teachers went up while the average number of students to teachers stayed the same? No! Think about it: if the total number of dogs went up in NYC but the number of dogs per household stayed the same, would that make sense? Yes! It just means there are more households that own dogs. If we think about this as a fraction, both the numerator and denominator (top and bottom) of the fraction went up at the same rate. The same thing could be true for our students per teacher average, right? If the number of teachers went up and the number of students rose at the same rate (in this case 30%), then the average number of students per teacher would remain the same.

Ok now that we’ve synthesized the information here, let’s look at the answer choices:

Answer Choice (A) We need the classes to increase in enrollment because otherwise the number of students would remain constant while the number of teachers would increase. This would throw off our proportion so the average number of students per teacher would not remain the same.

Correct Answer Choice (B) This is exactly what we need. If the number of teachers goes up, we need the number of students to increase as well in order for the average number of students per teacher to remain the same.

Answer Choice (C) This is unsupported. We know that the increase in budget allowed the school district to hire more teachers, but it’s really immaterial how much the budget increased by. We already know the number of teachers increased, how the budget corresponds to that is not necessary for us to understand.

Answer Choice (D) There’s nothing to suggest that the district either retained old teachers or hired new teachers–the bottom line is that the number of teachers increased.

Answer Choice (E) This is completely unrelated to the ratio of students to teachers and is wholly unsupported by our passage.


6 comments

The question stem reads: The career consultant's reasoning is most vulnerable to criticism on grounds that it. This is a Flaw question.

The consultant begins the argument by claiming the most popular career advice suggests emphasizing one's strengths and downplaying one's weaknesses to employers. The consultant then claims that research shows this advice to be incorrect. We have referential phrasing, so let's rephrase that claim to research shows emphasizing one's strengths and downplaying one's weaknesses to employers is bad advice. So if you are an employee, it is ill-advised to emphasize your good qualities and downplay your bad qualities, which is the consultant's conclusion.

Before we move forward, ask yourself what kind of research would provide the best evidence for the consultant's claim. Imagine if the consultant cited a study using dogs. Would you think that is excellent evidence for a claim about employees? Of course, you wouldn't because dogs are not the same as employees. Unless you are a Police K9, but let's not get too technical here. Good evidence would be research on employees. We want to be anticipating what the argument ought to say. If what the argument actually says deviates from what the argument ought to say, then bingo - we have found our flaw.

So what research does the consultant use? They say that a study of 314 managers shows that those who use self-deprecating humor in front of their employees are more likely to be seen by them (the employees) as even-handed, thoughtful, and concerned than those (the managers) who do not. Wait a minute, did the consultant just cite research about how managers present themselves to employees to conclude how employees should present themselves to employers? The argument uses evidence about one group to make a conclusion about another group. That is our flaw right there. Let's move to the answer choices.

Correct Answer Choice (A) is exactly what we identified as a flaw. When we map the stimulus onto (A), we get Bases a conclusion about how one group (managers) will respond to self-deprecation on information (the study of 314 managers) about how a different group (the employees) responds to it (self-depreciation). Bingo.

Answer Choice (B) is incorrect because the argument's conclusion is not about humor; the conclusion says that employees should not downplay weakness and emphasize strength. If the consultant's conclusion were about how managers should use (any type of) humor in front of their employees, then (B) would look better.

Answer Choice (C) is wrong because the research cited by the consultant says that managers who used self-deprecating humor were in a more positive light than managers who did not use self-deprecating humor. So the proposed problem in (C) is covered by the argument. (C) would look better if the stimulus said, "Managers who used self-deprecating humor were seen positively by employees," instead of comparing the managers who used the humor and those who did not. Even then, we would still run into the mismatch between employees and managers.

Answer Choice (D) is simply not done by the argument. Eliminate it.

Answer Choice (E) is the popular wrong answer, but I think that is primarily out of desperation. It is difficult to map this onto the stimulus. Those who picked (E) likely saw that the manager made a conclusion about the popular career advice (to emphasize strengths and downplay weaknesses). However, the evidence cited by the researcher is not a critique of that career advice. It is simply research.


19 comments

Career consultant: The most popular career advice suggests emphasizing one’s strengths to employers and downplaying one’s weaknesses. Research shows this advice to be incorrect. A study of 314 managers shows that those who use self-deprecating humor in front of their employees are more likely to be seen by them as even-handed, thoughtful, and concerned than are those who do not.

Summarize Argument
The author concludes that emphasizing one’s strengths to employers and downplaying one’s weaknesses is not good career advice. This is based on research showing that managers who used self-deprecating humor in front of their employees were more likely to be seen as having certain positive qualities than managers who did not use self-deprecating humor.

Identify and Describe Flaw
The author’s evidence concerns how managers are perceived by employees. But the author’s conclusion concerns how employees will be perceived by their employers. The author hasn’t shown that how managers are perceived by their employees is relevant to how employees will be perceived by their managers/employers.

A
bases a conclusion about how one group will respond to self-deprecation on information about how a different group responds to it
The author’s conclusion is about how one group will respond to self-deprecation (how employers will respond to employees). But the evidence is based on how a different group responds (how employees respond to managers).
B
ignores the possibility that what was viewed positively in the managers’ self-deprecating humor was the self-deprecation and not its humor
This possibility wouldn’t hurt the argument, because the author is assuming that the self-deprecation caused managers to be viewed positively.
C
ignores the possibility that non-self-deprecating humor might have been viewed even more positively than self-deprecating humor
The author never assumes that self-deprecating humor is more effective than non-self-deprecating humor. As long as self-deprecation can help one be perceived more positively, the author’s argument can still work.
D
infers from the fact that self-deprecating humor was viewed positively that nonhumorous self-deprecation would not be viewed positively
The author never assumes that nonhumorous self-deprecation wouldn’t be viewed positively. In fact, the author assumes that the self-deprecatory aspect of the managers’ behavior helps contribute to positive responses.
E
bases a conclusion about certain popular career advice on a critique of only one part of that advice
There’s nothing wrong with critiquing one part of advice, even if there are multiple parts. In addition, we can reasonably read the author’s critique as applying to both the “emphasizing one’s strengths” part and the “downplaying one’s weaknesses” part.

The question stem reads: The career consultant's reasoning is most vulnerable to criticism on grounds that it. This is a Flaw question.

The consultant begins the argument by claiming the most popular career advice suggests emphasizing one's strengths and downplaying one's weaknesses to employers. The consultant then claims that research shows this advice to be incorrect. We have referential phrasing, so let's rephrase that claim to research shows emphasizing one's strengths and downplaying one's weaknesses to employers is bad advice. So if you are an employee, it is ill-advised to emphasize your good qualities and downplay your bad qualities, which is the consultant's conclusion.

Before we move forward, ask yourself what kind of research would provide the best evidence for the consultant's claim. Imagine if the consultant cited a study using dogs. Would you think that is excellent evidence for a claim about employees? Of course, you wouldn't because dogs are not the same as employees. Unless you are a Police K9, but let's not get too technical here. Good evidence would be research on employees. We want to be anticipating what the argument ought to say. If what the argument actually says deviates from what the argument ought to say, then bingo - we have found our flaw.

So what research does the consultant use? They say that a study of 314 managers shows that those who use self-deprecating humor in front of their employees are more likely to be seen by them (the employees) as even-handed, thoughtful, and concerned than those (the managers) who do not. Wait a minute, did the consultant just cite research about how managers present themselves to employees to conclude how employees should present themselves to employers? The argument uses evidence about one group to make a conclusion about another group. That is our flaw right there. Let's move to the answer choices.

Correct Answer Choice (A) is exactly what we identified as a flaw. When we map the stimulus onto (A), we get Bases a conclusion about how one group (managers) will respond to self-deprecation on information (the study of 314 managers) about how a different group (the employees) responds to it (self-depreciation). Bingo.

Answer Choice (B) is incorrect because the argument's conclusion is not about humor; the conclusion says that employees should not downplay weakness and emphasize strength. If the consultant's conclusion were about how managers should use (any type of) humor in front of their employees, then (B) would look better.

Answer Choice (C) is wrong because the research cited by the consultant says that managers who used self-deprecating humor were in a more positive light than managers who did not use self-deprecating humor. So the proposed problem in (C) is covered by the argument. (C) would look better if the stimulus said, "Managers who used self-deprecating humor were seen positively by employees," instead of comparing the managers who used the humor and those who did not. Even then, we would still run into the mismatch between employees and managers.

Answer Choice (D) is simply not done by the argument. Eliminate it.

Answer Choice (E) is the popular wrong answer, but I think that is primarily out of desperation. It is difficult to map this onto the stimulus. Those who picked (E) likely saw that the manager made a conclusion about the popular career advice (to emphasize strengths and downplay weaknesses). However, the evidence cited by the researcher is not a critique of that career advice. It is simply research.


20 comments