In reality there are 6.2 billion personality adaptations (the current human
population of earth). Everyone has a personality (at least I am yet to meet someone
who does not have one) and every personality is unique. However to have a
classification system of this many is obviously meaningless. There have been many
ways of categorising personality over the years, two being the Ware 6 fold
classification system and the DSM-IV which has a 10 fold system. The DSM system
is listed below: