Recently, I was working on understanding how familiarity changes as users' experience increase.
A very normal understanding will be that the familiarity increases as users use the button and the interface more and more, but the speed of changing can also be interesting.
However, recently, I found that for a specific button of a specific menu, the familiarity decreases as users use the menu more. I think this is very interesting and I'm trying to figure out why.
I tried to think maybe because that users use the system with a long intervals, so that they forget about this system, however, it seems this isn't the case.
So, I am writing it here and hope someone can help me in some brainstorming.