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If the task requires creativity or mental rotation, music can increase performance.

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6QPX TIL that U.S. schoolchildren used to say the Pledge of Allegiance using the “Bellamy salute” (more recognizably the salute used by Hitler and the Nazis). In order to prevent further confusion or controversy, US Congress instituted the hand-over-the-heart gesture.
KYwG TIL that ironically, the majority of the world’s chopsticks are made in America. Georgia, to be exact.
9Y5vD TIL: An affair between two Brazilian politicians was revealed when they danced together to "Bésame Mucho". Later, one of them was to be introduced with a military march, but the director of the presidential band had them play "Bésame Mucho" instead. He got 3 days of house arrest for insubordination.
VM1EG TIL that China's censorship board has banned all films with a 'supernatural' or 'cult' theme. To get around this problem, all Chinese horror movies (like Die Xian series) now has a "it was just a dream"/"you were just under hypnosis" ending attached after the normal scary stuff.
QJkgE TIL that the town of Boring, Oregon's sister city is Dull, Scotland. "Dull has helped put Boring on our map," says OR state representative, Bill Kennemer. "People are starting to hear about Boring and they come and stop." The town is now developing a relationship with the Australian town of Bland.