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MMLU-Pro / 2173 / In a study of brain development, two groups of rats were reared in a laboratory…

Problem

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question

In a study of brain development, two groups of rats were reared in a laboratory setting. In Group I, each rat was raised in isolation with no toys, while in Group II, rats were divided into small groups and given toys to play with. Which of the following statements most accurately reflects the probable findings of this study?

category

psychology

options

  1. The rats raised in Group II will have forebrains that weigh more than those of the rats raised in Group I.
  2. The brains of the rats raised in Group I will show increased signs of stress compared to the brains of the rats raised in Group II.
  3. The brains of the rats raised in Group I will not be noticeably different from the brains of the rats raised in Group II.
  4. The rats raised in Group I will have forebrains that weigh less than those of the rats raised in Group II.
  5. The brains of the rats raised in Group I will consist of more white matter, while the brains of the rats raised in Group II will consist of more gray matter.
  6. The rats raised in Group I will have forebrains that weigh more than those of the rats raised in Group II.
  7. The rats raised in Group II will have smaller brains overall due to increased play activity.
  8. The rats raised in Group I will have less developed neural pathways than those of the rats raised in Group II.
  9. The brains of the rats raised in Group II will consist of more white matter, while the brains of the rats raised in Group I will consist of more gray matter.
  10. The rats raised in Group I will have forebrains that are the same weight as those of the rats raised in Group II.

src

ori_mmlu-high_school_psychology

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Source and history

Official source

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