From the Washington Post:

“There’s an awful lot of research about leadership out there. Many of these studies have information that can really assist current leaders and up-and-comers focus on the things that really matter. Unfortunately, unless you’re a professor or have extra time on your hands, the research will most likely go unread.

So that you don’t have to read it, we did. And to follow are brief summaries of some of the key findings of five leadership studies.”

Does Leadership Matter: new research says no (and yes) – Washington Post