Humble CEOs may be the new prize, but they are in short supply and face distinctive challenges.
Trolls tend to know the impact they'll have, but don't seem to care. So, how do we use our new findings to help stop this seemingly pointless, harmful behaviour?
Facebook has banned insurance firm Admiral from using its data but research suggests it could predict if you're a risk taker.
Both genetic and environmental factors determine someone's personality. Genes account for between 30-50% of the determination and unique environmental experiences making up the rest.