PrepTest 27, Section 2, Question 4
In Yasukawa's month-long study of blackbirds, the percentage of smaller birds that survived the duration of the study exceeded the percentage of larger birds that survived. However, Yasukawa's conclusion that size is a determinant of a blackbird's chances of survival over a month-long period is probably mistaken, since smaller blackbirds are generally younger than larger ones.
In Yasukawa's month-long study of blackbirds, the percentage of smaller birds that survived the duration of the study exceeded the percentage of larger birds that survived. However, Yasukawa's conclusion that size is a determinant of a blackbird's chances of survival over a month-long period is probably mistaken, since smaller blackbirds are generally younger than larger ones.
In Yasukawa's month-long study of blackbirds, the percentage of smaller birds that survived the duration of the study exceeded the percentage of larger birds that survived. However, Yasukawa's conclusion that size is a determinant of a blackbird's chances of survival over a month-long period is probably mistaken, since smaller blackbirds are generally younger than larger ones.
In Yasukawa's month-long study of blackbirds, the percentage of smaller birds that survived the duration of the study exceeded the percentage of larger birds that survived. However, Yasukawa's conclusion that size is a determinant of a blackbird's chances of survival over a month-long period is probably mistaken, since smaller blackbirds are generally younger than larger ones.
Which one of the following, if true, indicates that the criticism of Yasukawa's research is based on a misunderstanding of it?
Yasukawa compared the survival chances of two different species of blackbirds, a larger and a smaller species, rather than of different sizes of birds within one species.
Yasukawa examined blackbirds in their natural habitat rather than in captivity.
Yasukawa did not compare the survival chances of blackbirds with those of other kinds of birds.
Yasukawa noted that the larger blackbirds had more success in fights than did the smaller blackbirds.
Yasukawa noted that the larger blackbirds tended to have more firmly established social hierarchies than did the smaller blackbirds.
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