They are unusual but cool experiences that can actually tell us a lot about how our minds, particularly our memories, work. We are not sure about the exact percentage for two important reasons. First, we cannot ask everyone in the world so we have to use the results of surveys of small groups of people. This is a problem because surveys can give us quite different results depending on who we ask.
Asking the question in different ways can get very different results. For many younger kids, this may be a tricky thing to do.
Wait, have I been here before? Have we stood in this exact spot as you said these same words to me at some point in the past? Sometimes, as we experience a new event or place, we get that creepy feeling that it's not the first time. That explanation is perfect for cyberpunk science fiction, but it doesn't give us any scientific understanding of the phenomenon.
But scientists have tried using tricks like hypnosis and virtual reality. In a study by Leeds Memory Group, researchers would first create a memory for patients under hypnosis. That memory was usually something simple like playing a game or looking at a printed word in a certain color. Login Register Stay Curious Subscribe. Newsletter Sign up for our email newsletter for the latest science news. Sign Up. Already a subscriber? Want more? More From Discover. Mobile Newsletter banner close. Mobile Newsletter chat close.
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