Recent  research,  cited  in  The  Wall  Street  Journal  and                        The Atlantic, suggests that dressing up on the job can boost your confidence and productivity along with actually enabling you to think differently. According to one study by California State University, putting on more formal clothes makes us feel powerful, which changes the basic way we see the world. They found that people engage in higher levels of thinking—the kind of abstract thinking utilized by powerful executives—when they were dressed up, compared with those more casually dressed. So when you want to come up with the big ideas (and have those ideas heard), showing up in a sharp outfit could help you out.

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Another study, by the Yale School of Management, pitted young men in suits and dress shoes against a similar group wearing sweatpants and T-shirts in a series of negotiations. Not surprisingly, the suits slaughtered the sweatpants. After all, when you're dressed informally, it's harder to stand your ground, isn't it? And as you may know, pulling on a good suit jacket can make you feel as secure as wearing a piece of armor. As professor Michael W. Kraus, one of the study's authors, put it: when you're dressed well, you send others a signal "about you being successful and confident in whatever you're doing."

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And here's the really good news: as office dress codes relax and work environments tend to become more casual, the benefits of dressing up are even more pronounced. "When you don't need to wear formal clothing, that's where wearing formal clothing can have a bigger effect," says Kraus. Dressing well for the office shouldn't add stress to your workday. But if you put in the effort before you get to the office, it's clear now that you stand to reap some serious rewards for your sartorial dedication.