Did you know you can take a scaled back cognitive assessment on your own? It's called XpressO and it's offered by MoCA Cognition.
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How does it work? Well, it's a little more complex than what you described. You start with 5 images. You are asked to order those images however you like, and then remember the order. You then complete a pattern of shapes, sizes and colors, and then you are shown about 25 images, and you must pick the 5 that were originally shown and put them back in the order you placed them. You do this three times while being timed, the patterns getting a little more complex with each iteration.
Anyone that wants to do this can go to the link above and try it for themselves.
How would Biden or Trump perform on such a test? We have no idea, because there are people on both sides trying to make believe their guy doesn't need a cognitive assessment. But I'm sure you'll be happy to hear that according to my test results, I have excellent cognition for a man in his mid-40s.