On Monday, I posted a recently-discovered visual illusion with a quick poll to see how many of our readers could spot the illusion. As it turned out, not very many of them did. This was surprising to me, because the team that discovered the illusion, led by Ladan Shams, found that the illusion was very robust, experienced nearly all the time by most viewers. So why didn’t our readers see it?
I’ve designed a quick study to test a couple of hypotheses. Normally we restrict Casual Fridays to just 5 questions, but this time I had to stretch the rules just a bit — you’ll have 11 quick questions. It still should take no more than a minute of your time.
If you haven’t seen the illusion yet, please participate in the study first (if you have seen it, that’s no problem either; you’re welcome to participate). Then, if you’re interested in Shams et al’s research, you can check out our report on the illusion, and my follow-up post.
As usual, you will have until 11:59 p.m. Eastern time on Wednesday, November 1 to participate — or until we have 500 responses, whichever comes first. Then don’t forget to come back next Friday for our analysis of the results!