Tag Archives: polygamy

The Puzzle of Polygamy

Actually there are several puzzles about African polygamy:

  1. Why is it relatively high in tropical Africa? Oddly, Madagascar is the great exception: tropical, near Africa, but little or no polygamy. This makes me think that polygamy has deep roots, since Madagascar was settled by a separate population of Austronesians.
  2. There is a belt of high polygamy from West Africa to Tanzania, elsewhere in Africa it is present but at lower levels. Why does it vary? A paper by James Fenske* tests several hypotheses.
    • Inequality among men. It turns out that current inequalities among men are not predictive, but historical indicators of inequality on the eve of colonial rule (taken from the Ethnographic Atlas) do predict polygamy today.
    • Women supporting themselves by farming? It seems that polygamy is least common in those parts of Africa where women have historically been most important in agriculture. But I would add, even if it does not explain variation in Africa, this surely has to be part of the reason Africa as a whole has much polygamy compared to Eurasia.
    • The slave trade, taking men away, leaving more women. Correlation with the slave trade is not robust. Angola sent many slaves but has lowish polygamy.
  3. Polygamy has declined over the past half century. Why? Fenske tests several hypotheses and concludes that falling child mortality explains much of the decline in polygamy across sub-Saharan Africa. The mechanism I suppose is that now women are more confident they can successfully raise children in a monogamous marriage. But is this cause or consequence? Monogamy means more paternal investment, which should lessen child mortality.

The puzzles multiply.

James Fenske, “African polygamy: past and present” (pdf here)

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Burkina Faso Wins! (Polygamy Edition)

Emmanuel Todd has gathered some interesting data on polygamy (actually polygyny) rates.

The world champion is Burkina Faso! Over half of its married women have co-wives. (What do all the leftover men do?)

Arab and African Polygamy Rates

(% of married women with co-wife)

ARAB   COUNTRIES

Jordan 2002 6.8
Yemen 1997 7.1
Morocco 2003-04 4.7

BORDER   COUNTRIES

Sudan 1978-79 20.2
Sudan   (North) 9.3
Sudan   (Darfur) 37.9
Mauretania 2000-01 11.6

BLACK   AFRICA

Chad 1996-97 39.2
Chad   Muslims 35.6
Chad   Catholics 46.8
Chad   Animists 51.4
Mali 1996-97 44.3
Burkina   Faso 1998-99 54.7
Ivory   Coast 1994 36.6
Ivory   Coast Catholics 24.7
Ivory   Coast Muslims 44.5
Ivory   Coast Animists 47.2

Nigeria

1990

40.9

In Arab countries 5-10% of women are in polygamous marriages. In black Africa, 30-55% of women. The highest levels are in interior West Africa.

Another difference: Arab-style marriage of parallel cousins [father’s brother’s daughter] is uncommon in Africa. Instead cross-cousin [between the children of brother and sister] or exogamous marriage is the norm.

Reference:

Youssef Courbage and Emmanuel Todd, A Convergence of Civilizations: The Transformation of Muslim Societies (Columbia UP, 2011) p. 44.

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