Matthews started researching several differentsports and found different types of handedness ineach.By the way,he uses 'handedness' to refer tothe dominant side for feet and eyes as well ashands.Anyway,his team measured the hand,feetand eyes of 2,611 players and found that there werereally three main types of laterality:mixed - you workequally well on both sides - both hand and eye;single- you tend to favour one side but both hand andeye favour the same side;and cross-laterality - aplayer's hands and eyes favour only one side butthey are opposite sides.Let's start withhockey.Matthews found that it was best to be mixed-handed - this is because a hockey stickmust be deployed in two directions - it would be a drawback to have hand or eye favouring oneside.