How does age change how you learn?(2)年龄如何影响学习能力?(二)

Do different people experience decline differently?

不同人经历的认知衰退会有不同吗?

Do all people experience cognitive decline uniformly?Or do some people’s minds slip while others stay sharp much longer?
所有人经历的认知衰退都是一样的吗?还是有些人的思维衰退，另一些人却能长期保持敏锐?

These seems to be a little conflict on this point in the research.One literature review I found argues in favor of cognitive decline being mostly linear as we age and not increasing in variance.This suggests that, absent illness, we’re all on roughtly the same trajectory of cognitive slowdown.
在这一点上，研究还没有达成共识。我找到的一篇文献综述认为，随着年龄增长，认知的衰退几乎是线性的，而且人与人之间的差异也没有增加。这意味着，如果没有疾病，我们都会经历大致一样的认知衰退轨迹。

The lefthand graphs show decline of cognitive function, while righthand graphs show the variability.At least according to this study, variablility doesn’t show dramatic increases with age.
左边的图显示认知功能的衰退，右边的图显示不同人之间的差异。至少从这个研究来说，差异没有随年龄增长表现出明显的增加。

Another review, in contrast, seems to differ.The authors argue that variance increases with age, which goes with our normal intuition that some people seem to experience large declines in thinking with time while others fair much better.This seems to match up with other evidence that most factors associated with aging experience increasin