Grumpy People Work Best

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Don't be so quick to write off that dour curmudgeon sitting next to you in the office -- he could be doing better work than you are, according to a new study done by an Australian behavioral expert. Professor Joe Forgas claims that grumpy people think more clearly, are better at decision-making and are less gullible.

If that's true, it could explain why the most cheerful and optimistic among us sometimes appear air-headed, unrealistic and naive. Their penchant for "putting on a happy face" might be hindering their ability to do more clear, concise and objective work, according to Forgas' research.