Tag Archives: ABO blood groups

Blood type and personality

Nonoko Kamai Nagoya, Japan   ICS code block for blood bag identification (sample). Photo by ICS International GmbH. 2013. Accessed via Wikimedia Commons. CC BY-SA 3.0. Why do Japanese people believe in a relationship between blood type and personality? Beginning in the 1970s, the blood type personality hypothesis became fashionable in Japan and it is […]