Adults with attractive faces are more likely to win the trust of children, psychologists have said.
Scientists tested 32 four and five-year-olds who were shown 12 photos of women aged between 18 and 29.
Both boys and girls tended to believe answers assigned to pictures of pretty women.
The photos had previously been selected from 56 original images by a panel of university students who rated their attractiveness.
Only the most attractive and unattractive were presented to the children.
Lead researcher Dr Igor Bascandziev, from Harvard University in the US, said: ‘When learning about the world, children rely heavily on information provided to them by other people.
‘Previous studies have shown children can be influenced by a range of factors such as whether the adult was correct in the past or if they are familiar to them.
‘Our study wanted to examine whether children would trust an attractive stranger over an unattractive stranger.’
Each child was first shown pictures of six novel objects and asked to name them.
Whether or not they guessed correctly, the researchers suggested they seek the help of one of two people.