Ticks attach themselves to host animals to feed. Having fed to capacity, and not before then, the ticks drop off their host. Deer ticks feeding off white-footed mice invariably drop off their hosts between noon and sunset, regardless of time of attachment. White-footed mice are strictly nocturnal animals that spend all daytime hours in their underground nests.

Summary
Ticks attach themselves to other animals to feed on them. Ticks drop off their host only after they have fed to capacity. And, if they have fed to capacity, they will drop off their host.
Deer ticks that feed on white-footed mice always drop off their hosts between noon and sunset, no matter when the ticks first attached to the host.
White-footed mice are strictly nocturnal (they are active only at night). During daytime hours, these mice are underground.

Very Strongly Supported Conclusions
Deer ticks that feed on white-footed mice always drop from the mice they’re feeding on while the mice are underground. We know this is supported because the deer ticks always drop off during the daytime, and during the daytime the mice are underground.

A
Deer ticks all attach themselves to white-footed mice during the same part of the day, regardless of day of attachment.
We don’t know anything about when deer ticks attach themselves to mice. We know when they drop off the mice, but that doesn’t reveal anything about the timing of attachment.
B
Deer ticks sometimes drop off their hosts without having fed at all.
Ticks drop off only after feeding to capacity. So it can’t be true that deer ticks sometimes drop off without feeding at all.
C
Deer ticks that feed off white-footed mice drop off their hosts in the hosts’ nests.
This is strongly supported, because we know the ticks always drop off from the mice during the daytime, and during the daytime, the mice are in their underground nests.
D
White-footed mice to which deer ticks have attached themselves are not aware of the ticks.
We know nothing about the awareness of the white-footed mice. None of the facts suggest anything about whether the mice know the ticks are feeding on them.
E
White-footed mice are hosts to stable numbers of deer ticks, regardless of season of the year.
We know nothing about the stability of the numbers of deer ticks that feed on white-footed mice.

36 comments

Rossi: It is undemocratic for people to live under a government in which their interests are not represented. So children should have the right to vote, since sometimes the interests of children are different from those of their parents.

Smith: Granted, children’s interests are not always the same as their parents’; governmental deficits incurred by their parents’ generation will later affect their own generation’s standard of living. But even if children are told about the issues affecting them, which is not generally the case, their conceptions of what can or should be done are too simple, and their time horizons are radically different from those of adults, so we cannot give them the responsibility of voting.

Summary

Rossi asserts that children should get the right to vote, since it’s undemocratic for people to live under a government that doesn’t represent their interests, and children’s interests are sometimes different from the interests of their parents. Smith acknowledges that children and parents can have different interests. But he concludes that we shouldn’t give children the right to vote, because their conception about what the government can or should do is too simple, and because their timeline for being affected by the government is very different from that timeline for adults.

Strongly Supported Conclusions

For some people, it’s acceptable that that they live under a government that doesn’t represent all of their interests.

The simplicity of one’s understanding is relevant to whether one should get the right to vote.

A
A democratic government does not infringe on the rights of any of its citizens.

Unsupported. Smith doesn’t say anything about infringing on rights and whether a democratic government can engage in such infringement.

B
Children have rights that must be respected by any political authority that rules over them.

Unsupported. Smith doesn’t say anything concerning whether children’s rights should be respected. He concludes they shouldn’t get the right to vote. It’s not clear whether this means children have other rights that should be respected.

C
News programs for children would give them enough information to enable them to vote in an informed way.

Unsupported. Smith doesn’t say anything concerning how children might be made to be knowledgeable enough to vote. Maybe children just can’t understand news programs.

D
If there are any limitations on full democracy that result from denying the vote to children, such limitations must be accepted.

Strongly supported. Smith concludes that children shouldn’t be given the right to vote. This implies that Smith believes whatever consequences are associated with children’s lack of the right to vote are worth bearing.

E
If parents do not adequately represent their children’s interests in the political sphere, those interests will be adequately represented by someone else.

Unsupported. Smith doesn’t suggest that there is anyone who could adequately represent children’s interests besides parents.


24 comments

In a recent study, a group of subjects had their normal daily caloric intake increased by 25 percent. This increase was entirely in the form of alcohol. Another group of similar subjects had alcohol replace nonalcoholic sources of 25 percent of their normal daily caloric intake. All subjects gained body fat over the course of the study, and the amount of body fat gained was the same for both groups.

Summary
One group of subjects increased their daily caloric intake by 25 percent solely by consuming alcohol. Another group of subjects, instead of increasing their caloric intake, substituted 25 percent of their existing caloric intake solely by consuming alcohol. All subjects gained body fat, and the amount of body fat gained was the same for both groups.

Strongly Supported Conclusions
The number of calories a person consumes is not the only factor contributing to body fat gain.

A
Alcohol is metabolized more quickly by the body than are other foods or drinks.
This answer is unsupported. We don’t know from the stimulus how quickly alcohol is metabolized. Moreover, we don’t know from the stimulus how different rates of metabolization affect a person’s amount of body fat.
B
In the general population, alcohol is the primary cause of gains in body fat.
This answer is unsupported. We don’t know from the stimulus whether alcohol is the primary cause. We know that it may be a cause, but to say it is the primary cause is too strong.
C
An increased amount of body fat does not necessarily imply a weight gain.
This answer is unsupported. The stimulus does not mention the weight of any of the people in the groups. The stimulus solely focuses on amount of body fat, which may or may not correlate with weight gain.
D
Body fat gain is not dependent solely on the number of calories one consumes.
This answer is strongly supported. The first group increased their caloric intake and the second group’s caloric intake remained the same yet both groups gained body fat. Therefore, body fat gain is not dependent solely on a person’s caloric intake.
E
The proportion of calories from alcohol in a diet is more significant for body fat gain than are the total calories from alcohol.
This answer is anti-supported. Both groups in the stimulus gained the same amount of body fat.

79 comments