What makes a boss great? It’s a question that’s been researched for a while now. I’ll avoid giving any advice that isn’t rooted in real proof of efficacy; I want to pass along the techniques and behaviors that are grounded in sound research. It seems to me that, by adopting the habits of good bosses and shunning the sins of bad bosses, anyone can do a better job overseeing the work of others.

At the same time, I’ve come to conclude that all the technique and behavior coaching in the world won’t make a boss great if that boss doesn’t also have a certain mindset.

My readings of peer-reviewed studies, plus my more idiosyncratic experience studying and consulting to managers in many settings, have led me identify some key beliefs that are held by the best bosses — and rejected, or more often simply never even thought about, by the worst bosses. Here they are, presented as a neat dozen:

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