For centuries, the widespread acknowledgment of the involvement of the cerebellum-a dense brain structure in vertebrates-in coordinating motor control...
GMAT Information and Ideas : (Ideas) Questions
For centuries, the widespread acknowledgment of the involvement of the cerebellum-a dense brain structure in vertebrates-in coordinating motor control in humans has hindered recognition of other possible functions of the structure. Neuroscience research from the last two decades now suggests that the cerebellum regulates emotion and social behavior, and recent research by Ilaria Carta and colleagues has identified a pathway connecting the cerebellum to a center for motivation and reward processing known as the ventral tegmental area (VTA).
Which choice best states the main idea of the text?
Step 1: Decode and Map the Passage
Part A: Create Passage Analysis Table
| Text from Passage | Analysis |
|---|---|
| For centuries, the widespread acknowledgment of the involvement of the cerebellum—a dense brain structure in vertebrates—in coordinating motor control in humans has hindered recognition of other possible functions of the structure. |
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| Neuroscience research from the last two decades now suggests that the cerebellum regulates emotion and social behavior, |
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| and recent research by Ilaria Carta and colleagues has identified a pathway connecting the cerebellum to a center for motivation and reward processing known as the ventral tegmental area (VTA). |
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Part B: Provide Passage Architecture & Core Elements
Main Point: The cerebellum, historically known only for motor control, has been discovered through recent neuroscience research to have additional functions in emotion, social behavior, and reward processing.
Step 2: Interpret the Question Precisely
What's being asked? The question asks for the main idea of the entire text.
What type of answer do we need?
- Content Genre: Sciences
- Content Format: Text-only
- Question Type: Main Point or Purpose (entire)
- Language Complexity: Moderate
Any limiting keywords? N/A
Step 3: Prethink the Answer
- The correct answer should capture the shift from old thinking to new understanding
- It needs to mention that the cerebellum was historically viewed as primarily handling motor functions, but recent research has revealed additional roles
- Claims the pathway research confirms the cerebellum's "long-suspected role in motor coordination" but the research reveals NEW functions, not confirms old ones
- Focuses on challenging claims about "a pathway connecting the VTA and the cerebellum" but the passage presents the pathway discovery as supporting evidence for newly discovered functions
- Accurately captures that the cerebellum "has primarily been thought to regulate motor functioning" and correctly identifies that "recent years neuroscience researchers have been uncovering additional functions"
- Claims "technological limitations have historically hindered the study" but the passage never mentions technological limitations