Researchers at a University in Sydney, Australia have determined that grumpy people are not only better at decision-making, but also less gullible than their happy-go-lucky neighbors.  So the next time you get in a bad mood, take heart that your mood means a period of far superior critical thinking skills.

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Scientists say cheerfulness fosters creativity, flexibility, cooperation and reliance on mental shorts while gloominess breeds attentiveness and careful thinking. It appears that grumpy people are better able than happy people to cope with demanding situations because of the way the brain promotes information processing strategies.  Maybe that’s why the company bean counter at your office is always in a bad mood!