Do narcissists come up with superior ideas?

No — but they are better at convincing others that their ideas are good. So don’t rely on narcissists to create the best work, but definitely let them present it.

Via Brain Trust: 93 Top Scientists Reveal Lab-Tested Secrets to Surfing, Dating, Dieting, Gambling, Growing Man-Eating Plants, and More!:

…researchers at Cornell had students come up with movie ideas and then pitch them to other students. In written form, narcissistsâ pitches were no more convincing than those of their peers. But when narcissists pitched their movie ideas in person, they were a full 50 percent more well received than their peersâ. The conclusion is this: The narcissist in your group shouldnât be allowed to sculpt the product, but should be encouraged to present it.