I've participated in some research on the aging brain, partly because my mother started showing signs of what we assumed was Alzheimers at about my current age, partly out of do-gooder syndrome.
Two of the projects had me run various computer-based exercises. The most recent one is being run by a Phd with Georgetown University, possibly with the hospital; I'm not clear. His exercises spanned a wider variety of challenges than I'd run into before: for example seeing a long sequece pairing seldom seen names (because rare in English or originating in a foreign language) with pictures of the objects or a sequence of pairs of objects with no obvious connection (i.e., a brick and a coffin).
Before I got old, I'd almost always do well on tests, tests requiring language knowledge and identifying shapes. As I've reached my 80's I'm doing less well on the familiar tests, and absolutely lousy on some of the Georgetown tests. While some of my problems likely are changes in my brain, I think I never would have done well on some of them.
The ways I and my spouse process ideas and experience are often very different, which was observed years ago when we both took the same tests. She hasn't taken the Georgetown tests, but I expect she would do much better than I did on some of the tests.
In a perfect world, knowing what I do now, I'd wish I had taken these tests back in my teens. It would have expanded my view of how brains work, and made me better.
