Psychologist and dancer Dr Peter Lovatt – aka Dr Dance – gets staff moving at the launch of the Edinburgh International Science Festival.

Visitors to the National Museum of Scotland can take part in a mass experiment on dance and sexual attraction, organised by Mr Lovatt, a reader in psychology at the University of Hertfordshire.

Members of the public will be asked to step into a curtained off "Dance Box", put on headphones and dance for 30 seconds, while their moves are recorded on camera. They will also have their finger lengths measured for pre-natal testosterone and oestrogen levels. Participants can then view the recordings of dancers and assess each one's attractiveness. The data is intended to test a theory that the attractiveness of a person's dancing is linked to their pre-natal hormone levels. Picture: Gordon Terris