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O-U-I-J-A

99% Invisible

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The Idiomotor Effect on Ouija Boards

Professor Chris French is head of the Anomalistic Psychology Research Unit at Goldsmiths University of London. The reason that it seems to work, it feels as if it works, is down to something called the idiomotor effect. Our bodies are making small, subconscious movements that are guided by a suggestion or some subconscious knowledge. When we played Ouija at my house, the planchett seemed less to be governed by the idiom motor effect and more by the law of inertia. I don't know what's going on. Nothing. And our experience wasn't terribly strange or creepy. It was mostly just slow. It was kind of like an image all of it. But merch has

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