This is a simple vision trick that determines whether you are a woman or not, by using the latest technology available to researchers.

Instructions: Look at the picture and try to find at least one picture of a dog.

Here are some comments from some people who took this test:

"I couldn't see a dog and I stared at the picture for a good 10 minutes."

"I think it is one of those pictures where you have to stare at certain spot and then everything comes into focus, but it never happened to me. I'll give it another try later."

"I almost didn't find the dogs at all!"

"There is a dog in this picture? Where?"

"This must be a joke; there are no dogs in this picture."

The average reaction time for men appears to be a lot smaller than that for a woman. The following are average times for men and women:

Women: 12.46 minutes
Men: 1.23 seconds