What makes a great leader? Management theorist Simon Sinek suggests, it's someone who makes their employees feel secure, who draws staffers into a circle of trust. But creating trust and safety - especially in an uneven economy - means taking on big responsibility.

Neuroscientist Matthew Lieberman explains that through his studies he's learned that our kryptonite is ignoring the importance of our social superpowers and by building on our social intuition, we can make ourselves smarter, happier, and more productive.

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