"Humans also use dance as part of courtship, but it has been difficult for scientists to pin down exactly what it is about a dance that appeals to members of the opposite sex. This is because factors such as facial attractiveness, height and even social status tend to confound any attempt to judge the relative merits of a person’s gyrations. Nick Neave of Northumbria University in Britain decided to try to answer the question using motion-capture technology, as used to make films like 'Avatar'. Thirty students were recruited, none of whom was a professional dancer..."