Paragraph 1: The author
introduces the main problem with using brain scans to study mental activity. The author distinguishes between using brain scans for medical diagnosis, where their value is clear, and using them in psychology, where their validity depends on the
modular theory of mind.
Brief summary: Brain scans are useful for diagnosing physical problems, but using them to understand the mind depends on the assumption that different mental functions exist in separate brain areas.
Paragraph 2: The author
questions the modular theory of mind and presents William Uttal’s alternative view. According to this view, mental processes are not separate but are distributed throughout the brain. The author uses emotion and reason as an example to show that mental functions cannot always be clearly separated.
Brief summary: Mental activities may work together throughout the brain rather than being located in completely separate areas.
Paragraph 3: The author
raises a possible objection: if the modular theory is wrong, why do brain scans show particular areas “lighting up”? The author then
explains how fMRI scans work, especially the subtraction process used to compare brain activity during a task with a baseline condition.
Brief summary: fMRI scans show differences in brain activity by subtracting baseline activity from activity during a specific task.
Paragraph 4: The author
criticizes the subtraction method. The entire brain is active in both conditions, but the subtraction makes it appear as if only certain areas are responsible for a particular mental function. The author ends with a
rhetorical question suggesting that brain scans may appear to support the modular theory partly because of the way the scans are produced.
Brief summary: The subtraction method can create a misleading impression that mental functions are located in specific brain areas, which may make the modular theory seem more convincing than it actually is.
Overall argument:The author argues that
brain scans can create a misleading impression of how the mind works. Although scans show specific areas becoming more active, this does not necessarily prove that particular mental functions are located exclusively in those areas.
1) Which one of the following most accurately states the main point of the passage?(A) In spite of troubling conceptual problems surrounding brain scan technology, its use in psychological research on mental activity has grown rapidly. — Wrong: The passage discusses conceptual problems with using brain scans in psychology, but it does not say that their use has grown rapidly.
(B) The use of brain scans to depict mental activity relies on both a questionable premise and a misleading methodological approach. — Correct: The author argues that using brain scans to study mental activity depends on the questionable
modular theory of mind and on the
subtractive method, which can create a misleading impression of functional localization.
(C) Contrary to what is usually asserted in the popular press, reason and emotion are probably not located in the prefrontal cortex and the amygdala, respectively. — Wrong: This is an example the author uses to criticize the modular theory, but it is not the main point of the entire passage.
(D) Although the fMRI is usually interpreted as a measure of metabolic activity in the brain, this interpretation is misguided and therefore leads to false results. — Wrong: The author explains that fMRI measures differential oxygen use, but the main criticism is broader: the
subtractive method can create a false impression of separate brain regions.
(E) The modular theory of mind has gained wide currency precisely because it is illustrated effectively by the images produced by the subtractive method. — Wrong: The author suggests that the images may make the modular theory seem attractive, but this is presented as a concluding observation rather than the main argument.
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Answer: B 2) According to the modular theory of mind, as described in the passage, mental activity(A) consists of distinct components in localized areas of the brain —
Correct: The author explains that the modular theory of mind assumes that the mind can be divided into separate and distinct modules, and that these modules are located in specific regions of the brain.
(B) requires at least some metabolic activity in all parts of the brain —
Wrong: The passage actually presents this idea as a criticism of the modular theory, not as part of the theory itself.
(C) involves physical processes over which people have only limited control —
Wrong: The passage does not discuss whether people have control over the physical processes involved in mental activity.
(D) is localized in the amygdala and the prefrontal cortex —
Wrong: These areas are given only as an example of the popular claim that emotion and reason are localized in different areas. The modular theory is broader than these two regions.
(E) generally involves some sort of reason-giving —
Wrong: The author mentions reason-giving only to demonstrate that emotion and reason can interact, which challenges the idea that they are completely separate.
✅ Answer: A
3) The author of the passage would be most likely to agree with which one of the following statements regarding the subtractive method?(A) Because the subtractive method masks distributed brain functions, empirical results derived using the method are invalid for medical applications. Wrong: The passage may criticize the subtractive method for potentially obscuring the distributed nature of brain functions, but this does not mean that all empirical results obtained through the method are invalid for medical applications. The statement is too extreme.
(B) The subtractive method results in images that strongly support Uttal's view that mental processes are simply properties of a more general mental activity. Wrong: Uttal's view emphasizes the distributed nature of mental processes, whereas the subtractive method can instead make particular functions appear to be localized in specific brain regions.
(C) Brain scans of individuals experiencing anger that were produced using the subtractive method show that emotions are not actually seated in the amygdala. Wrong: The passage does not claim that subtractive-method brain scans demonstrate that emotions are not associated with the amygdala. This conclusion goes beyond what the method can establish.
(D) The subtractive method seems to strongly support the modular theory of mind because it creates an illusion that brain functions are localized. Correct: The passage explains that the subtractive method can make it appear as though particular mental functions are located in specific areas of the brain. This apparent localization supports the
modular theory of mind, which holds that mental processes can be divided into distinct modules associated with particular brain regions.
(E) The view that the subtractive method depicts differential rates of oxygen use in the brain is based on a fundamental misconception of the method. Wrong: The passage does not identify this as a fundamental misconception. The method is based on comparing differences in brain activity between conditions, and changes in oxygen use can be part of what is measured.
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Answer: D 4) The author draws an analogy between brain scans and X-rays primarily in order to(A) contrast a valid use of brain scans with one of more doubtful value — Correct: The author compares brain scans used for medical diagnosis to X-rays because both allow doctors to see inside the body. The author then contrasts this relatively clear and reliable use with the more questionable use of brain scans in psychology to study mental activity.
(B) suggest that new technology can influence the popularity of a scientific theory — Wrong: The author does not discuss how technology affects the popularity of scientific theories in this comparison.
(C) point to evidence that brain scans are less precise than other available technologies — Wrong: The author does not claim that brain scans are less precise than other technologies.
(D) argue that X-ray images undermine a theory that brain scans are often used to support — Wrong: X-rays are used simply as a comparison to explain the medical use of brain scans; they do not undermine the modular theory.
(E) show how brain scan technology evolved from older technologies such as X-rays — Wrong: The author does not discuss the historical development of brain-scan technology.
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Answer: A 5) According to the passage, psychologist William Uttal contends that the various mental processes are likely to be(A) independent modules that are based in different areas of the brain — Wrong: This is the
modular theory of mind, which Uttal challenges. He argues that mental processes are not distinct, independent entities.
(B) essentially an amalgamation of emotion and reason — Wrong: The author uses emotion and reason as an example, but Uttal's argument is broader. He does not claim that all mental processes are simply a combination of emotion and reason.
(C) generally uniform in their rates of oxygen use — Wrong: The passage discusses oxygen use when explaining how fMRI works, but Uttal's argument is not about uniform oxygen consumption.
(D) detectable using brain scans enhanced by means of the subtractive method — Wrong: The subtractive method is discussed later as a possible source of a
misleading impression of separate brain regions.
(E) features of a general mental activity that is spread throughout the brain — Correct: The author states that Uttal believes the various mental processes are likely to be
properties of a more general mental activity distributed throughout the brain.
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Answer: E 6) Which one of the following statements is most strongly supported by the passage?(A) Although there are important exceptions, most cognition does in fact depend on independent modules located in specific regions of the brain. — Wrong: The author questions the modular theory and suggests that mental processes may instead be distributed throughout the brain.
(B) The modular theory of mind holds that regions of the brain that are not engaged in a specific cognitive task have a rate of oxygen use that is close to zero. — Wrong: The passage says that
the entire brain is active in both conditions. The modular theory does not claim that inactive areas have almost no oxygen use.
(C) During the performance of certain cognitive tasks, the areas of the brain that are most metabolically active show a rate of oxygen use that is higher than that of the rest of the brain. — Correct: The passage explains that fMRI measures differences in oxygen use between a baseline condition and a condition in which a person performs a cognitive task. Therefore, areas that are more active during the task show a higher rate of oxygen use relative to the baseline.
(D) The baseline measurements of oxygen use taken for use in the subtractive method show that some regions of the brain have high metabolic activity at all times. — Wrong: The passage does say that the
entire brain is active in both conditions, but it does not specifically state that some regions have high metabolic activity
at all times.
(E) When a brain scan subject experiences anger, the subtractive method shows several regions of the brain as "lit up" with metabolic activity. — Wrong: The passage uses anger only as an example to show that
emotion and reason can interact. It does not describe an actual fMRI experiment involving anger.
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Answer: C