In one task, for instance, participants viewed a series of shapes appearing on a screen. Each time, they had to quickly identify whether it was the same shape or different to the one before. Unbeknown to the participants, the colour of the previous shape could predict where the next appeared on the screen. Participants who learnt to pick up on that pattern should be able to focus their attention and make their choice more rapidly. Besides taking this test, the participants also completed a questionnaire that measured how superstitious they were in everyday life.

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