In the modern world we communicate via the telephone more than ever, in many cases with people we have never met. What assumptions do we all make about people's attractiveness based upon their voices? Our experiment introduced by Derren Brown and presented by Kat Akingbade and Charlie McDonnell aims to answer some of these questions. This is Channel 4's Science Of Attraction. You can also follow us on twitter twitter.com/SciOfAttraction and Facebook www.facebook.com/pages/Science-of-Attraction/155175891174341?v=app_4949752878