A month or so ago I did a little informal study correlating
blood type to personality test results. For a sample of about
45 MBA students, I found that Type O's scored significantly higher
than the rest of the sample in "Sensing" (using the five physical
senses to gather information), and in the Sensing/Thinking
combination (indicating that they are more detail- and fact-oriented, logical,
precise, orderly, rule- and procedure-conscious, dependable,
responsible, and good at objectively observing and organizing than the rest of
the sample). O's also had a preference for learning through reading and writing.
I would conjecture that the tendency for sensing and getting facts right
stems from the hunter-gatherer need to observe and accurately assess the environ-
ment in order to survive.

The only significant finding for A's was that they had a higher need
for autonomy than anyone else, perhaps stemming from a need to establish
a separate identity as a self-sufficient farmer in the community-based
agrarian society.

The B's however, were the most interesting. They scored significantly higher
on "Intuiting" (indicating a preference for sixth sense information, and on the
"Intuiting/Feeling" combination, indicating that they tend
to be "insightful, mystical, idealistic, personal, creative, original, globally-
oriented, people-oriented, and good at imagining." They also learned best through
listening, and reflecting on and interpreting what they had observed. Perhaps a nomadic
life on the steppes contributed to long hours for talk, meditation, and reflection.

AB's were not well-enough represented to treat them as a separate group.

Food for thought.

Martha