3 thoughts on “Awesome Concentration Test”

  1. I had to watch it twice to believe that I actually missed the obvious! As a biker, I love the message! Drivers, be alert!

  2. Here’s the original (less polished) version from the Visual Cognition Lab at the University of Illinios:


    (Click “View the Basketball video”)

    The instructions are the same – count the number of passes by the white team. About half of the people didn’t see the gorillla. Once you know it’s coming, it’s impossible to not see it.

    Brains are cool.

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