What are the characteristics of cognitive health in the elderly?

At present, in the practice of clinical and community cognitive intervention, it is generally believed that cognitively healthy elderly people are not completely free of cognitive decline. The core characteristics are intact core social functions, small cognitive fluctuations, mild decline that can be improved through adjustment, and widespread cognitive advantages at the emotional and experiential levels. They are not the stereotype of "the older they get, the more confused they become."

Two months ago, I met 73-year-old Uncle Li when I was doing a cognitive screening at a street elderly care service station. He turned around and forgot where to put the cognitive scale he had just filled out. He asked me if I had not given him a form. But when it came to organizing old neighbors to go picking in the suburbs, everything from contacting compliant buses, counting the elderly's taboos and basic diseases, and arranging several rest spots along the way, all were arranged in detail and even more thoughtfully than a station-based social worker in his twenties. This is a very typical cognitive state of healthy elderly people.

In the early years, academic circles generally believed that cognition in old age was a downward decline in all dimensions. Long-term tracking studies in the past ten years have slowly overturned this conclusion. Human cognition is inherently divided into two directions. One is fluid intelligence that relies on neural response speed, such as instant memory and rapid calculation. This type of intelligence will slowly decline from about thirty years old, and will be more severe in old age. The other more obvious manifestation is crystallized intelligence accumulated through experience, such as logical judgment, worldly sophistication, and professional skills that have been cultivated for many years. Not only does this type of intelligence not decline with age, it may even increase into the 70s and 80s. In cognitively healthy elderly people, crystallized intelligence often can completely make up for the shortcomings of fluid intelligence and will not affect normal life.

Many people don’t know that emotional regulation ability is also an important criterion for cognitive health. Most cognitively healthy elderly people digest negative emotions faster and will not dwell on trivial matters. Last year, our website tracked more than 120 samples of elderly people with normal cognition. When encountering troubles such as talking back to younger members of the family or running short of groceries, they were able to adjust in less than two hours on average. This was nearly 30% faster than the mood of the young people in their 20s and 30s who accompanied the sample. This is what people often call "living well." This is actually the optimal solution given by the cognitive system after integrating a lifetime of social experience.

Of course, there are different voices in the academic community. Some scholars believe that this so-called cognitive advantage in the elderly is essentially a compensatory mechanism of the brain. It is not that cognitive ability is really better than that of young people, but that more experience reserves are used to make up for the lack of neural responses. However, no matter which view is currently accepted, as long as the core social functions are not damaged, occasionally forgetting to put the keys, turning off the ignition, and reacting half a beat slower than young people, are all normal cognitive health states. There is no need to rely on Alzheimer's disease whenever you see an old person forgetting things.

In fact, the brain of a cognitively healthy elderly person is like an old computer that has been used by a senior designer for more than ten years. It starts up a little slower, and the storage path may often not be found when temporarily saving a small file. However, the project materials that have been stored for decades and the logical framework of the plan are very clear. If you really want to deal with the familiar work, the efficiency is much higher than that of a new computer with an empty hard drive.

Of course, we must also pay attention to distinguish the boundary between normal decline and pathological changes. If an elderly person forgets who he is and where his home is, or if the home appliances he has been cooking for decades or using for most of his life suddenly cannot operate at all, you must pay attention even if it only occurs occasionally. Don't treat it as a normal "old fool" and delay the opportunity for intervention.