Ok, I've been pondering this for several weeks.
It seems to me that as we have nations and countries, we have characteristic distribution of temperaments within them as well. So each nation or ethnic could have its own distribution of temperaments. This can be pretty crucial in particular endeavors.
So the traditional Keirsey's distribution is around 40/40/20 (SJ/SP/N). For Keirsey is American, lets assume distribution 40/40/20 standard for the USA.
e.g. I'd say my fucking country has distribution something like 70/25/5
Let's take Italy. We all know that Italians are considered pretty temperamental. Explanation could lie again, in distribution of temperaments (for Italy, particularly high number of SPs). My wild guess would be 30/60/10 for Italy.
And we can go on and on...
What do you think about this theory? Any suggestions?