For most scientists, the period of highest creativity occurs before the age of forty. It is commonly thought that this happens because the aging process brings about a loss of creative capacity. However, it turns out that almost all scientists who produce highly creative work beyond the age of forty entered their field late, less than a dozen years before their creative breakthroughs. Since
creative breakthroughs by scientists under forty also generally occur within a dozen years of the scientist’s entry into the field, it is most likely that the real reason why scientists over forty rarely produce highly creative work is not that they are too old but rather that they generally have spent too long in a given field.
In the argument given, the two portions in boldface play which of the following roles?
The argument tries to explain why most scientists do their most creative work before forty. The first boldface presents the pattern that needs explaining. The second boldface supports the author’s explanation: creative breakthroughs tend to occur within a certain number of years after entering a field, regardless of age.
So the issue is not age itself, but time spent in the field.
A. The first presents a state of affairs, the explanation of which is at issue in the argument; the second provides evidence in support of the explanation that the argument seeks to establish.
This is correct. The first boldface states the fact to be explained, and the second supports the author’s preferred explanation that creativity depends more on
time since entering the field than on age.
B. The first presents a state of affairs, the explanation of which is at issue in the argument; the second presents evidence that has been used to challenge the explanation that the argument favors.
This is incorrect. The second boldface supports the author’s explanation; it does not challenge it.
C. The first is the main conclusion of the argument; the second provides evidence in support of that main conclusion.
This is incorrect. The first boldface is not the conclusion. It is the phenomenon the argument tries to explain.
D. The first is a claim that the argument seeks to refute; the second provides evidence in support of an alternative claim that the argument seeks to establish.
This is incorrect. The author does not refute the first boldface; the author accepts it and explains it differently.
E. The first is a generalization that, according to the argument, has exceptions; the second presents some of those exceptions.
This is incorrect. The second does not present exceptions to the first. It gives supporting evidence for the author’s explanation.
Answer: (A)