Dating and personality types
This makes it possible to create a personality profile for yourself based on your own assessment of your feelings and beliefs, or for another person by completing the test based on the other person's past behavior and social interactions.
The program includes an introduction to personality analysis that describes personality compatibility criteria and how personality attributes may affect social interactions.
Using blood types beyond medical intent–such as a marker for personality traits–has become an increasingly popular pastime in recent years, though the idea has been knocking around Japan since the late 1920s Depending on your cultural background, thinking of blood types in this way might not be so obvious, but there’s a large audience in East Asia that believes in its merits, most notably in Japan and Korea, and the United States is beginning to catch on, too.
A, B, O, or AB (positive or negative), and indicate whether one person can tolerate the blood transfusion of another.
Others look to numerology, and the mystical connections between numbers and life events.