Is confidence really the key to success in life? This is Science Today. Laura Kray, a professor of management and leadership at the University of California, Berkeley’s Haas School of Business, explains that being confident in situations like job interviews and negotiations can often lead to better deals. And if you’re not naturally confident, you can at least prime yourself with the mindset.

"We should remind ourselves of a time in which we were powerful and which we had control over a situation. Remember what it felt like. We find that in doing that leads to behaviors that are consistent with actually being in a powerful position."

Even power poses, or putting oneself into an expansive body posture, can help project power and confidence – and this can deter any deception during face-to-face encounters.

"So, if you’re going in sort of hesitant and not really projecting 100 percent confidence, then people assume you don’t know what you’re doing and may take advantage of you."