Demographic Astrology; A Study of History as revealed by the Astrological Transits.
Astrologers feel that the movement of the planets affects not only individuals but groups of people as well. We look to the planetary configurations to understand demographic changes and shifts in the outlooks of people; age groups, localities, generations. Each is born into their specific astrological "milieu" for growth, and we like to  look at these and sort out whay we think people act the way they do, and perhaps even predict some future behaviors.
At the very least, as we follow the transits of the outer planets we can track exactly the divisions between generations, rather than the more vague definitives that sociologists come up with.

This book has just begun; it will be some time in gestation, but I could not resist whetting my readers appetite. With my North Node in Aquarius, in the 11th house, I am meant to be a demographer, and feel this will be my best book yet!