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Jun 14, 2026

Question

S1: It is well documented that people of above average intelligence, as measured by traditional intelligence (IQ) tests, often think and act irrationally. S2: Cognitive psychologists have been puzzled by this peculiar phenomenon because it had long been dogma in psychology that there should be a positive correlation between a person’s IQ and his or her ability to think and act rationally. S3: Recently, Keith Stanovich, professor of applied psychology, has proposed an explanation for this phenomenon. S4: He argues that IQ tests miss some of the most important aspects of how people make decisions in the real world, and that it is possible to test high in intelligence yet suffer from a cognitive defect called “dysrationalia,” which he describes as the inability to think and behave rationally despite having adequate intelligence.

S5: Research in cognitive psychology points to two reasons for dysrationalia, the first of which is a processing issue related to the structure of the human brain, which has available to it a number of different mechanisms by which to make decisions. S6: Some of these mechanisms process information in a way such that, in using them, people are apt to think and act rationally, but people often tend to avoid using these “higher-fidelity” mechanisms because using them not only requires significant concentration and energy expenditure but also interferes with other cognitive processes, causing people to feel uncomfortable. S7: As a result, people often opt instead to use processing mechanisms that are significantly more comfortable to employ and that require far less processing power yet are not well suited for thinking and acting rationally; using these “lower-fidelity” mechanisms is not optimal for decision-making. S8: In fact, psychologists Susan Fiske and Shelly Taylor have coined the term “cognitive miser” to describe a person who uses the cognitive path of least resistance in processing information and thus often makes poor decisions.

S9: The second source of dysrationalia, explains Stanovich, is an issue involving content. S10: In order to think and act rationally, he says, people must possess specific knowledge — rules, data, procedures, strategies, and other tools of cognition that cognitive scientist David Perkins calls “mindware.” S11: When people are missing the mindware necessary for making rational decisions or solving problems appropriately, there exists a mindware gap. S12: According to this view, the larger a person’s mindware gap, the more apt the person is to suffer from dysrationalia. S13: For example, a person without training in statistics will struggle to think and act rationally when faced with even basic decisions that require an understanding of probability.

In can be inferred that the author mentions “significant concentration and energy expenditure” in order to

support the assertion that some brain mechanisms process information in a way such that, in using them, people are apt to think and act rationally

explain why people are apt to think and act rationally when they use higher-fidelity mechanisms

provide evidence in support of the theory that people of adequate intelligence can think rationally by learning to maintain focus

identify a key characteristic of the use of higher-fidelity mechanisms that causes people to opt to use them

present a reason for people’s choosing to use processing mechanisms that are not well suited for thinking and acting rationally

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