Here’s Why You Feel a Little Weird on Friday the 13th, Even if You’re Not Superstitious

 It’s Friday the 13th . . . the unofficial holiday for blaming everything on bad luck.  And even if you don’t THINK you’re superstitious, this day can still mess with your head. There’s even a term for it in psychology:  illusory correlation.  That’s our tendency to make connections between unrelated…

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