Are you a night owl?

Are you burning the candle at both ends?

Don't feel too bad – it turns out you are potentially more intelligent than those of us who visit the land of nod earlier.

A new study, Why Night Owls Are More Intelligent, has found that the later we stay up at night, the higher our IQ. Researchers theorise that it is an evolutionary effect, with more intelligent, inquisitive and revolutionary humans staying awake after the usual curfew of darkness.

Photograph: iStock