I've taken it several times today at different times, and am surprised at how much variance there has been. Mostly low scores, but once scored very low on both, then average on both a half hour later.
I noticed though, that the fifteen words never changes. They say it's random but it isn't random at all. Even so I noticed my score changes pretty much in line with times of the day that I feel more or less functional overall.
They do say to take it multiple times to get a better idea of overall functioning.
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I'm not likely to be around much longer. As before when I first signed up here years ago, I'm finding that after a long hiatus, and after only a few days back on here, I'm spending way too much time here again already. So I'm requesting my account be locked, banned or whatever. It's just time. Until then, well, I dunno...