The eyes really are a window to the soul. The way they move can reveal your personality type – a finding that could help robots better understand and interact with humans.

Psychologists have long believed that personality influences the way we visually take in the world. Curious people tend to look around more and open-minded people gaze longer at abstract images, for example.

Now, Tobias Loetscher at the University of South Australia and his colleagues have used machine learning – a type of artificial intelligence – to study the relationship between …