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[考试资讯] GRE阅读求助大神解答!!

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发表于 2017-7-25 09:42 |显示全部楼层
求问一道GRE考题

有大神么


Although social learning (the acquisition of specific behaviors by observing other individuals
exhibiting those behaviors ) is well documented among fish, few studies have investigated social
learning within a developmental context in these taxa. Rather than investigating the development of
a particular skill, Chapman, Ward, and Krause investigated the role of group density during
development in later foraging success in laboratory-housed guppies. When raised with a small
number of conspecifics (members of the same species), guppies were quicker to locate food by
following a trained adult guppy than were guppies raised in large groups. This counterintuitive
finding is explained by the fact that guppies reared in the high-density condition were less likely to
shoal (swim in a group ) with others and, therefore, were less likely to learn the benefits of social
learning. Instead, fish reared in high-density situations may learn that conspecifics are to be
viewed as competitors, rather than as potential sources of adaptive information. This finding
suggests that at least for guppies, the early social environment may have an effect on the capacity
for social learning, if not on the socially learned behaviors themselves.



这是原文

3. Which of the following can be inferred about the study by Chapman, Ward, and Krause?
A. It was initially designed to investigate something other than social learning.
B. It required researchers to observe individual guppies at multiple points in their life spans.
C. It pointed to the possibility that population density may have little to do with guppies’ social
learning.
D. It required the observation of guppies under conditions that closely mimicked the conditions of
guppies in the wild.
E. It indicated that guppies gain adaptive information from being reared with a relatively large
number of conspecifics.


答案我在B和D之间吃不准


求大神解答




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