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Declining mental function is often seen as a problem of old age, but certain
Declining mental function is often seen as a problem of old age, but certain
游客
2024-01-20
8
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问题
Declining mental function is often seen as a problem of old age, but certain aspects of brain function actually begin their decline in young adulthood, a new study suggests.
The study, which followed more than 2,000 healthy adults between the ages of 18 and 60, found that certain mental functions—including measures of abstract reasoning, mental speed and puzzle-solving— started to dull as early as age 27.
Dips in memory, meanwhile, generally became apparent around age 37.
On the other hand, indicators of a person’s accumulated knowledge—like performance on tests of vocabulary and general knowledge—kept improving with age, according to findings published in the journal Neurobiology of Aging.
The results do not mean that young adults need to start worrying about their memories. Most people’s minds function at a high level even in their later years, according to researcher Timothy Salthouse.
"These patterns suggest that some types of mental flexibility decrease relatively early in adulthood, but that the amount of knowledge one has, and the effectiveness of integrating it with one’s abilities, may increase throughout all of adulthood if there are no diseases," Salthouse said in a news release.
The study included healthy, educated adults who took standard tests of memory, reasoning and perception at the outset and at some point over the next seven years.
The tests are designed to detect subtle (细微的) changes in mental function, and involve solving puzzles, recalling words and details from stories, and identifying patterns in collections of letters and symbols.
In general, Salthouse and his colleagues found, certain aspects of cognition (认知能力) generally started to decline in the late 20s to 30s.
The findings shed light on normal age-related changes in mental function, which could aid in understanding the process of dementia (痴呆), according to the researchers.
"By following individuals over time," Salthouse said,"we gain insight in cognition changes, and may possibly discover ways to slow the rate of decline."
The researchers are currently analyzing the study participants, health and lifestyle to see which factors might influence age-related cognitive changes. [br] According to Salthouse, their study may help us________.
选项
A、find ways to slow down our mental decline
B、find ways to boost our memories
C、understand the complex process of mental functioning
D、understand the relation between physical and mental health
答案
A
解析
推理判断题。定位段指出,通过长期追踪个体,我们在认知能力的变化方面有了一定的发现,同时也有可能发现减缓这种衰退速度的方法。A)的含义也是找到减缓心智衰退的方法,故答案为A)。
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