New study reveals the science behind Ouija boards

It's not demons. It's not the undead. The explanation is actually way more boring that you'll ever guess.

Ouija boards. You either love 'em or hate 'em... or you're one of the undead and someone with one keeps calling you back up to chat, sort of like the paranormal equivalent of butt-dialing. Either way, it's been immensely popular since its invention by Elijah Bond in 1890 thanks to its supposed ability to "talk to the dead". Over a century later it's become quite the pop culture staple. Untold thousands of spooked-out kids have toyed with it at sleepovers—and dozens of supposed demonic possessions have allegedly (key word: allegedly!) occurred because of it.


But it turns out there's a far more pedantic explanation of why Ouija boards work. And it's a lot more boring than talking to dead people. Thanks to a landmark Danish study—available here—from the Interactive Minds Centre at Aarhus University, researchers have figured out what makes ouija boards actually work, all because they used what other studies haven't: eye-tracking devices and huge amounts of data analysis.

Note the camera overlooking the table, and the 2 pairs of camera-glasses. Picture of the study, c/o Aarhus University. 

40 people were asked to participate in the study and play 2 consecutive "games" on the Ouija board. All wore eye-tracking devices for both games: during the first game they were asked separately to spell the word 'Baltimore', and in the second they were asked to play as usual (i.e. without a set phrase in mind to spell). 

When the first experiment called for spelling the word 'Baltimore', the eyes of the people in the study flitted to the next letter based on familiarity with the alphabet (and their ability to spell the word). But when asked to conduct a session as usual, their tracked eyes showed that the word they eventually spelled was a combination of the efforts of the two parties. Basically: you're averaging out an answer with whomever you're "playing" with. And the supernatural part? That's just you being unsure of the next letter — 21.6% more unsure, to be exact, according to the study — and the more likely you are to believe the board is possessed, the more control you assign yourself to lose (and thus be more swayed by the person on the other side of the board). 

Your mind already (hopefully) knows the alphabet, and is making subconscious movements towards certain letters just from looking at the board. In short: if you want the Ouija's answer to be "banana" really bad, unless the person you're playing with is a total alpha personality, you'll probably end up with "banana" as your answer. 

c/o Aarhus University

One of the most interesting takeaways from the study lies in the implementation of the study itself: it took a really, really long time to read all those eye movements. 

...coders were instructed that focal gaze had to fall on the exact letter that the planchette would subsequently reach. Any amount of time looking on the exact letter would qualify as a prediction. On average, it took around one and a half hours for the coders to annotate 1 min of video. The coders manually annotated 3–4 h of video in total.

That's about 315 hours of looking at eye movements. 

tl;dr? The Ouija board works because of the ideomotor phenomenon, and the study proved that using eye-capture devices and a ton of time analyzing the data. 

 


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