Do these dual images say anything about your personality?

There's little that Internet denizens love more than a snazzy personality test—cat videos, maybe, or perpetual outrage. One trend that has gained popularity over the last several years is personality quizzes based on so-called ambiguous images—in which one sees either a young girl or an old man, for instance, or a skull or a little girl. It's possible to perceive both images by shifting one's perspective, but it's the image one sees first that is said to indicate specific personality traits. According to one such quiz, seeing the young girl first means you are optimistic and a bit impulsive, while seeing the old man first would mean one is honest, faithful, and goal-oriented.

But is there any actual science to back up the current fad? There is not, according to a paper published in the journal PeerJ, whose authors declare these kinds of personality quizzes to be a new kind of psychological myth. That said, they did find a couple of intriguing, statistically significant correlations they believe warrant further research.

In 1892, a German humor magazine published the earliest known version of the "rabbit-duck illusion," in which one can see either a rabbit or a duck, depending on one's perspective—i.e., multistable perception. There have been many more such images produced since then, all of which create ambiguity by exploiting certain peculiarities of the human visual system, such as playing with illusory contours and how we perceive edges.

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