[hondadriver]

Thanks that might work better.

I think especial the other way around.

My wife for sure has a vivid visual experience, and only sees black when asked to see black. So, I don't think people without aphantasia will be identified having it with the question. I also was very specific with all black, not black and an image.

Asking a colour might identify people who do not know they have aphantasia

Because some people I've asked who think they can visualise, say they actually don't see anything, but imagine seeing. So what they see with eyes closed, is 'black'. That's why I've used that question. But they might not know the colour when not told in advance.