Anthropologist: Violence is an extreme form of aggression, and is distinct from the self-expression sufficient for survival under normal conditions. Human beings in certain situations react to unpleasant stimuli with violence—but only because they are conditioned by their culture to react in this manner.

Summary

Violence is a type of aggression—an extreme type. Violence is different from self-expression. Violent reactions are a result of cultural conditioning.

Notable Valid Inferences

This is a MBT Except question. This means all the wrong answers can be logically inferred from the stimulus. The right answer cannot be logically inferred from the stimulus.

Some examples of valid logical inferences from the stimulus are: under normal conditions, it is not necessary for humans to react with violence; there are forms of aggression that are not violent; and there are no causes for violent reactions other than cultural conditioning.

A
Not all aggression is violent.

This must be true. We are told that violence is an extreme type of aggression, which implies there are other types of aggression that are not violent. Violence is only one manifestation of aggression.

B
The self-expression required for survival is generally nonaggressive.

This could be false. We know violence is a type of aggression and violence is different from the self-expression humans need. We don’t know that aggression and the necessary self-expression are distinct. The required self-expression may be a form of aggression that isn’t violent.

C
Some behaviors are influenced by the cultures in which human beings live.

This must be true. The stimulus tells us that cultural conditioning is the reason people react violently. “Some” implies one or more—we have one example given to us in the stimulus, which means this must be true.

D
In normal circumstances, human beings can survive by responding nonviolently.

This must be true. The stimulus tells us that self-expression is enough for survival under normal conditions, and we know that self-expression is distinct from violence.

E
Violent behavior is a product of one’s cultural environment.

This must be true. The stimulus tells us the only cause of violent behavior is cultural conditioning.


73 comments

A person’s dietary consumption of cholesterol and fat is one of the most important factors determining the level of cholesterol in the person’s blood (serum cholesterol). Serum cholesterol levels rise proportionally to increased cholesterol and fat consumption until that consumption reaches a threshold, but once consumption of these substances exceeds that threshold, serum cholesterol levels rise only gradually, even with dramatic increases in consumption. The threshold is one fourth the consumption level of cholesterol and fat in today’s average North American diet.

Summary
A person’s consumption of cholesterol and fat is one of the most important factors affecting a person’s serum cholesterol level. Serum cholesterol levels increase proportionally to increased consumption of fat and cholesterol until a threshold is reached. Once this threshold is reached, consumption of fat and cholesterol only cause a person’s serum cholesterol level to rise gradually even if consumption of fat and cholesterol increases dramatically. The threshold is one fourth the consumption level of these substances in the average North American diet.

Strongly Supported Conclusions
A person who consumes a fraction of the amount of cholesterol and fat compared to the average North American may not have a significantly different level of serum cholesterol.

A
The threshold can be lowered by lowering the dietary consumption of cholesterol and fat.
This answer is unsupported. We don’t know what factors could cause the threshold to be lowered, if at all.
B
People who consume an average North American diet cannot increase their consumption of cholesterol and fat without dramatically increasing their serum cholesterol levels.
This answer is anti-supported. We know that once a threshold is reached, dramatic increases in the consumption of cholesterol and fat can only result in a gradual increase of serum cholesterol.
C
People who consume half as much cholesterol and fat as in the average North American diet will not necessarily have half the average serum cholesterol level.
This answer is strongly supported. If a person is consuming half as much cholesterol and fat than the average North American, then that person is still consuming double the the amount of these substances compared to the threshold.
D
Serum cholesterol levels cannot be affected by nondietary modifications in behavior, such as exercising more or smoking less.
This answer is unsupported. We only know that consumption of cholesterol and fat is one of the most important factors affecting serum cholesterol. It is possible that there are other factors that could affect serum cholesterol levels.
E
People who consume less cholesterol and fat than the threshold cannot reduce their serum cholesterol levels.
This answer is anti-supported. We know from the stimulus that, before a threshold, serum cholesterol levels are directly proportional to a person’s consumption of fat and cholesterol.

98 comments

The Levant—the area that borders the eastern Mediterranean—was heavily populated in prehistoric times. The southern Levant was abandoned about 6,000 years ago, although the northern Levant, which shared the same climate, remained heavily populated. Recently archaeologists have hypothesized that the sudden depopulation in the southern Levant was due to an economic collapse resulting from deforestation.

Summary

The Levant has a northern and a southern part, and both used to have high populations. The northern part still has a high population, but the southern part does not. This is because of a sudden economic collapse resulting from deforestation more than 6,000 years ago.

Notable Valid Inferences

The northern Levant did not face economic collapse about 6,000 years ago. Climate must not be part of the reason why the southern Levant is abandoned. The economic collapse is what caused the depopulation of the southern Levant, as opposed to some other factor.

A
The sheep and goats herded by the peoples of the southern Levant until 6,000 years ago grazed extensively on the seedlings and saplings of indigenous tree species.

This could be true. No information in the stimulus suggests the goats and sheep that existed prior to the deforestation and depopulation of the southern Levant did not graze on indigenous tree species’ seedlings and saplings.

B
Trees were used in the production of lime plaster, a building material used extensively throughout the southern Levant until 6,000 years ago.

This could be true. No information in the stimulus suggests trees were not used to produce lime plaster prior to the deforestation and depopulation of the southern Levant.

C
Organic remains from the northern Levant reliably indicate that tree species flourished there without interruption during the period when the southern Levant was being abandoned.

This could be true. No information in the stimulus suggests the northern Levant had any issues with deforestation.

D
Carbon dating of organic remains from the southern Levant reliably demonstrates that there were no forests present in that area prior to 6,000 years ago.

This must be false. We know the southern Levant faced economic collapse due to deforestation. Such deforestation could not have occurred if there were no forests in the region in the first place.

E
Since there are few traces of either quarried stone or of mud brick in buildings excavated in the southern Levant, it is likely that the buildings built there prior to 6,000 years ago were made almost entirely of timber.

This could be true. No information in the stimulus suggests the southern Levant’s buildings were not made solely from timber.


32 comments

In defending the Hyperion School of Journalism from charges that its program is of little or no value to its students, the dean of the school pointed to its recent success in placing students: 65 percent of its graduates went on to internships or jobs in print or broadcast journalism.

Summarize Argument
The dean implies his conclusion that the journalism program isn’t “of little or no value to its students.” His evidence is that 65 percent of graduates from the program go on to secure internships or jobs in journalism.

Notable Assumptions
The dean assumes that the 65 percent figure is sufficient to say that the journalism program is of some value to its students. This means he believes that some of those students wouldn’t have otherwise secured journalism internships or jobs.

A
More than half of the school’s students came from jobs in journalism to improve their skills.
At least 51 percent of students had journalism jobs before entering the program. If that’s the case, only a small fraction of the other students got new journalism jobs at the end of the program. Thus, the program isn’t helping students get jobs as much as the dean implies.
B
Some newspaper editors do not regard journalism school as a necessary part of the training of a journalist.
Even if newspaper editors don’t think it’s necessary, it may still be helpful. We don’t know if this truly challenges the dean’s claim that the program is helping its graduates get jobs.
C
The number of cities with more than one major newspaper has declined sharply over the last 25 years.
If anything, this strengthens the dean’s claim. Jobs are scarce, so that 65 percent statistic seems rather excellent.
D
The program offered by the Hyperion School of Journalism is similar in quality and content to those offered by its peer institutions.
We’re not comparing across schools. We’re concerned with whether this particular program was of value to its students.
E
The proportion of applicants to the Hyperion School of Journalism that are admitted is lower than it was ten years ago.
No one ever said the program isn’t competitive. We’re concerned with its value.

67 comments

Lack of exercise produces the same or similar bodily effects as aging. In fact, the physical changes that accompany aging can often be slowed down by appropriate exercise. No drug, however, holds any promise for slowing down the changes associated with aging. Therefore, _______.

Summary
Aging and lack of exercise cause similar effects on the body. Physical changes that accompany aging can be slowed by exercise. However, no drug is promising when it comes to slowing physical changes accompanying aging.

Strongly Supported Conclusions
Exercise is more reliable than drugs when it comes to slowing down the physical changes that accompany age.

A
taking drugs has the same effect on aging as does a lack of exercise
This answer is unsupported. We don’t know whether taking drugs causes similar physical changes to the body compared to lack of exercise.
B
people who do not exercise are likely to need drugs to sustain their health
This answer is unsupported. We don’t know whether people who do not exercise need drugs to sustain their health. We only know that lack of exercise contributes to bodily changes in a similar way that aging does.
C
appropriate exercise can prevent the physical changes associated with aging
This answer is unsupported. We don’t know whether exercise prevents physical changes. Rather, we only know that exercise slows these physical changes.
D
people who do not exercise when they are young will gain few benefits from beginning to exercise at a later age
This answer is unsupported. We don’t know whether the beneficial effects of exercise are different at different ages.
E
if the physical changes of aging are to be slowed, it is more practical to rely on exercise than on drugs
This answer is strongly supported. Since drugs do not hold any promise for slowing down physical changes associated with aging, it’s better to rely on exercise to slow these changes.

22 comments

Editorialist: Society is obliged to bestow the privileges of adulthood upon its members once they are mature enough to accept the corresponding responsibilities. But science has established that physiological development is completed in most persons by age seventeen. Since this maturing process has been completed by most seventeen-year-olds, there is no reason not to grant these citizens all of the privileges of adulthood.

Summarize Argument
The author concludes that there is no reason not to grant most 17-year-olds the privileges of adulthood. This is based on the fact that society is obligated to grant these privileges to all of its members who are mature enough to accept the corresponding responsibilities. And, science has shown that physiological development — which the author calls the “maturing process” — is completed in most people by the age of 17.

Identify and Describe Flaw
The author shifts between two meanings of “mature.” Although society is obligated to grant the privileges of adulthood to people who are “mature” enough to accept corresponding responsibilities, this use of “mature” refers to one’s mental and moral development, not physiological development. But the author then relies on the physiological maturity of most 17-year-olds. This is a different sense of the concept “mature.”

A
assumes what it is trying to prove
The author does not use circular reasoning. None of the premises assumes that there’s no reason not to grant most 17-year-olds the privileges of adulthood.
B
too hastily reaches a general conclusion on the basis of a few examples
The author does not cite to a few examples to support his conclusion. The author instead cites to a principle regarding what society is obligated to do, as well as what science has established. Neither of these premises involve individual examples.
C
equivocates with respect to a central concept
The author equivocates with respect to the central concept of maturity. The principle regarding society’s obligations uses “maturity” in its mental or moral sense. But the author then relies on evidence regarding “maturity” in its physical development sense.
D
too readily accepts a claim by appeal to inappropriate authority
The author does not rely on authority to support his conclusion. He doesn’t ask us to believe the conclusion because an authority has said it or otherwise supports it.
E
ignores the fact that some people are mature at age sixteen
The author never assumes that 16-year-olds are never mature. He acknowledges that the physical maturing process is complete by the time most people reach seventeen; this allows for people to become mature before 17.

34 comments

Commissioner: I have been incorrectly criticized for having made my decision on the power plant issue prematurely. I based my decision on the report prepared by the neighborhood association and, although I have not studied it thoroughly, I am sure that the information it contains is accurate. Moreover, you may recall that when I received input from the neighborhood association on jail relocation, I agreed with its recommendation.

Summarize Argument: Counter-Position
The commissioner concludes that critics are incorrect to claim that a decision about a power plant was premature. Why? Because the decision was based on a neighborhood association report, which the commissioner is certain contains accurate information (even though the commissioner hasn’t read it closely). Also, the commissioner agreed with a previous recommendation from this association about a different issue.

Identify and Describe Flaw
The commissioner concludes that a decision was not premature, even though it was based on a single report which the commissioner hadn’t studied closely. This is supported only by a baseless assurance that the report is accurate, and a favorable view of a previous report on a different issue.

The overarching flaw is that the commissioner relies too much on a single, unverified report by an organization of unknown reliability.

A
It takes for granted that the association’s information is not distorted by bias.
The commissioner accepts the association’s report as the only necessary basis for a decision, but offers no assurance that the association is not biased.
B
It draws a conclusion about the recommendations of the association from incomplete recollections.
The commissioner does not appear to have an incomplete recollection of the association’s recommendation. Also, the conclusion is about whether the decision was hasty, not about the recommendation itself.
C
It takes for granted that the association’s report is the only direct evidence that needed to be considered.
The commissioner uses the association’s report as the only basis for a decision, without ever mentioning the possibility of considering other evidence or explaining why other evidence is not necessary.
D
It hastily concludes that the association’s report is accurate, without having studied it in detail.
The commissioner claims to be “sure” that the report is accurate, but admits to having not studied it in detail. However, without having studied the report in detail, the commissioner cannot really be sure of its accuracy.
E
It takes for granted that agreeing with the association’s past recommendation helps to justify agreeing with its current recommendation.
The commissioner uses an agreement with a past report to defend the use of the association’s current recommendation as the only basis for a decision. However, the past report does not guarantee the quality of the present recommendation.

50 comments