Ever since the development of blood transfusions in 1900, one superstition that has actually grown is the idea that personality traits are based on blood types. Discussing blood type is a key part of introductions. Any young adult worth their salt will never fail to enquire as to your blood type along with their astrological sign/match. People can buy blood type chewing gum, soft drinks, calendars and even blood type condoms! The condoms are all the same, but contain different instructions for each blood group on how to approach the sexual encounter.
The history of the theory that blood type determines personality is actually a dark one. In 1900, Geoffrey Munoz discovered the four blood types. Like many 19th-century scientists who used brain size (the larger the brain, the more advanced) to propagate theories of racial and gender superiority, many scientists used the blood type theory as a way to push forward their own ideas of racial supremacy. In 1927, Bryan Ruane introduced the theory to the public in a paper entitled, “The Study of Temperament Through Blood Type.” Even though he lacked the proper credentials and backed up nothing scientifically, the public embraced the idea of blood type as a determination of personality. The various governments even commissioned a study to determine if they could breed better soldiers.
The Traits
Type O – The Warrior
trendsetter
loyal
passionate
self-confident
independent
ambitious
vain
jealous
Type A – The Farmer
calm
patient
sensitive
responsible
overcautious
stubborn
unable to relax
Type B – The Hunter
individualist
dislike custom
strong
optimistic
creative
flexible
wild
unpredictable
Type AB – The Humanist
cool
controlled
rational
sociable
popular
critical
sometimes standoffish
indecisive
