I’ve dug up an old, never published, dataset that I collected back in 2013. This dataset fairly cleanly shows that it’s harder to remember words correctly if you also have to remember the case of the letters. That is, if the shown word is Banana and the subject recalls it as Banana, then it’s correct, but banana is as wrong as if the subject had recalled bapple. It’s not very surprising that it’s harder to correctly remember words when case matters, but the result and the dataset are fairly …