Studies have shown that monogamous women bore more children per wife than did polygamous wives except the first. Fertility at the societal level, however, was enhanced because of the near universality of marriage among women and the abundant opportunities for remarriage among previously married women of childbearing age. L. L. Bean and G. P. Mineau, “The Polygyny-Fertility Hypothesis: A Re-evaluation,” Population Studies 40 (1986): 67–81; Miriam Koktvedgaard Zeitzen, Polygamy: A Cross Cultural Analysis (Oxford and New York: Berg, 2008), 62–63.