This didn't work for me either, full screen or not, at any distance.
I think it has to do with the clarity of people's peripheral vision. When I look at the plus sign, I can't see the faces at all. I mean, I can see the general shape of them, but I can't see any detail, so I wouldn't know if they were attractive or ugly.
For those for who this works, they can actual see details on the faces in their peripheral vision.
Here's something from Wikipedia. My peripheral vision is much worse than the below:
"The lower line of text simulates the acuity of vision with the relative acuity percentages. To do a test close one eye, fixate the upper line at the fixation point and try to read the words to the right and left without moving your eyes. The result should be similar to the incrementally blurred lower line of text - except that you never have the impression of a blurred text. The reason: Your visual perception is already the result of a massive computational analysis made by your brain. Your system "knows" that the upper line is not blurred, so you don't see it as blurred. But the difficulty of recognition increases with the distance from the fixation point".
I think it has to do with the clarity of people's peripheral vision. When I look at the plus sign, I can't see the faces at all. I mean, I can see the general shape of them, but I can't see any detail, so I wouldn't know if they were attractive or ugly.
For those for who this works, they can actual see details on the faces in their peripheral vision.
Here's something from Wikipedia. My peripheral vision is much worse than the below:
"The lower line of text simulates the acuity of vision with the relative acuity percentages. To do a test close one eye, fixate the upper line at the fixation point and try to read the words to the right and left without moving your eyes. The result should be similar to the incrementally blurred lower line of text - except that you never have the impression of a blurred text. The reason: Your visual perception is already the result of a massive computational analysis made by your brain. Your system "knows" that the upper line is not blurred, so you don't see it as blurred. But the difficulty of recognition increases with the distance from the fixation point".