Age characteristics, national composition, migration processes, and th
e level of inbreeding among Kursk citizens were analyzed on the basis
of a sampling study of marriages registered in Kursk in 1960 and 1989.
Assortative marriages in reference to age were r = 0.910 in 1960 and
r = 0.904 in 1989. The polychoric relationship index characterizing na
tional correlation of married pairs was K = 0.440 in 1960 and K = 0.40
5 in 1989. Positive assortative mating in reference to the birthplace
of the married pairs was revealed: K = 0.190 in 1960; K = 0.161 in 198
9. The coefficient of local population relationship (a) was 0.000026 i
n 1960 and 0.000011 in 1989.