Your voice can give away a lot about you.. Humans can tell whether other people are taller or stronger than they are just by listening to them roaring.

To test this, Jordan Raine at the University of Sussex and his colleagues recorded roars made by actors in training at a London drama school. “We did a pilot study beforehand and found that some ordinary people were really uncomfortable doing the roars. But the actors got really into it,” says Raine.

He and his team instructed 31 men and 30 women to imagine themselves …