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February20109

Many wives reduces AIDS risk?

Jacob Zuma has been catching heat for fathering a child outside his (polygynous) marriage. HIV/AIDS activists criticize the Zulu custom of marrying many wives. There are good reasons to discourage polygyny, but it’s Zuma’s philandering outside marriage and not his multiple marriages that poses the real AIDS risk.

In fact, a new paper just published suggests that polygyny is associated with lower HIV transmission:

HIV prevalence is lower in countries where the practice of polygyny is common, and within countries, it is lower in areas with higher levels of polygyny.

Proposed explanations for the protective effect of polygyny include the distinctive structure of sexual networks produced by polygyny, the disproportionate recruitment of HIV-positive women into marriages with a polygynous husband, and the lower coital frequency in conjugal dyads of polygynous marriages.

Don’t worry, I didn’t get that last bit either. As far as I can understand: men with many wives are old and have less sex; meanwhile all the men who want to have lots of sex (the young ones) can’t find a partner.

Other AIDS research blames concurrent sex for the escalation of the African AIDS crisis.

The story: Africans don’t have more sex than Americans; both have roughly the same number of partners in a lifetime. But Americans are more likely to be serial monogamists, while Africans are more likely to have concurrent partners (outside marriage). These networks allow HIV to spread more easily. Polygyny, it seems, is the exception.

Only, of course, if guys like Zuma stick to their three wives.

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February20108

And he says Haiti made a pact with the Devil…

Former Liberian president Charles Taylor, testifying in his war crimes trial in The Hague on Thursday, said that his government had awarded American televangelist Pat Robertson a gold mining concession in 1999 and that Robertson later offered to lobby the Bush administration on the government’s behalf.

Robertson denies the quid pro quo. See the Washington post report. Hat tip to Libby Wood.

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February20108

The other Superbowl

While everyone else watched the Superbowl last night, I watched the 1995 Rugby World Cup. Or, rather, Clint Eastwood’s take on South Africa’s sport, politics, and forgiveness: Invictus.

In my defense, I didn’t actually know it was Superbowl Sunday.

(Oh wait. Maybe that’s not such a great defense. I plead Canadianitis.)

For those who don’t know the film’s premise: Mandela becomes President of South Africa, turns an Afrikaner game (rugby) into a national symbol, victories abound, and many white people hug black children.

I emerged happy. It effectively manipulated the underdog-wins-pleasure-zone of my brain–in both the sport and political arenas. That alone is worth nine dollars.

Fundamentally this is a movie about leadership: the power of one man’s compassion and principle to carry the day–be that a country or a rugby match.

It is also, perhaps unintentionally, a movie about luck: luck that leads a failing rugby team to triumph in the last minutes of overtime; luck in Mandela’s gamble to make a symbol of Apartheid into a source of national unity.

To me, that makes the movie a powerful metaphor for the South Africa of 1994. The country tilted towards civil war. Leadership and luck pulled it back.

For someone who studies war for a living, this is a difficult thing to digest. Social scientists want systemic factors to operate; levers to pull; policies to manipulate. But leadership and luck, these reside in the error term. My considered belief: I think Clint Eastwood may be closer to the truth than the social scientists.

I retreat, therefore, into sentiment. In the movie, Morgan Freeman (Mandela) gives Matt Damon (the Rugby Captain) a copy of Invictus, a stirring poem he kept on a scrap of paper in prison.

In reality, however, Mandela gave Pienaar a different passage, Teddy Roosevelt’s Man in the Arena:

It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.

Go to sleep tonight wishing for more Mandelas.

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February20107

Do boys explain high savings in China?

There are approximately 122 boys born for every 100 girls today, a ratio that means about one in five Chinese men will be cut out of the marriage market when this generation of children grows up.

…Our study compared savings data across regions and in households with sons versus those with daughters. We found that not only did households with sons save more than households with daughters on average, but that households with sons tend to raise their savings rate if they also happen to live in a region with a more skewed gender ratio. Even those not competing in the marriage market must compete to buy housing and make other significant purchases, pushing up the savings rate for all households.

That is Shang-Jin Wei writing in VoxEU.

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February20107

Can mentoring help female assistant professors?

Economics isn’t known for gender balance among senior faculty. So six years ago, the Committee for the Status of Women in the Economics Profession started a randomized controlled trial of a mentoring program for young, female economists. The results?

After five years the 2004 treatment group averaged .4 more NSF or NIH grants and 3 additional publications, and were 25 percentage points more likely to have a top-tier publication. There are significant but smaller effects at three years post-treatment for the 2004 and 2006 cohorts combined.

The NBER paper is here. Ungated here.

Another astonishing fact that may not immediately occur: a Committee subjected itself to a randomized control trial. This is what I love about my profession: the sneaking suspicion it was once colonized by Vulcans.

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February20105

Wonku update (funny because it’s true edition)

Hoisted from comments, from Quiet Griot, hands down my favorite entry so far:

It is too boring

To learn econometrics

Hooray, RCTs!

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February20105

Navigating the academic press

Political scientists write three kinds of books: 1) disciplinary, scientific books written primarily for some part of the profession; 2) books that are primarily for class use; and 3) books for a broader audience that either cross disciplinary lines or are for a lay audience interested in some public policy question.

All serve an important purpose. But there is far less overlap among these three types of books than authors—and sometimes editors—think. Why is this?

An excerpt from Charles Myers’ Short Tour of Book Publishing for Political Scientists.

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February20104

Twitter + development + haiku

Equals “wonku”.

From Duncan Green, an ianugural poem:

Conditional cash

transfers. A panacea?

Can’t be that easy.

I love it. I may even try my hand at a wonku:

Despite Nick Kristof’s

histrionic reporting,

not all Congo raped.

Duncan, eat your heart out.

Readers: what’s in your wonku?

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February20104

The Africa of the night

Sarkozy did nothing of the kind.

Many had believed him when, as a presidential candidate, he committed himself to a postcolonial clean-up in a speech in Benin in 2006: ‘We must rid Franco-African relations of the networks of a bygone age, of informal emissaries who have no mandate other than the one they invent for themselves.’

There would be no more nodding and winking, no more ‘secrets and ambiguities’: ‘Relations between modern states can’t simply depend on the quality of relations between heads of state but must hinge on square and honest dialogue.’

Yet since he took office, Sarkozy has perpetuated France’s time-honoured tradition of parallel diplomacy in Africa. One set of advisers presides in public over the official business of l’Afrique de jour, while Robert Bourgi, in tandem with the Elysée chief of staff, Claude Guéant, is in charge of l’Afrique de nuit, where the lucrative, personalised politics that Sarkozy denounced during his presidential campaign continue to thrive.

Stephen Smith writes about the retreat of la Françafrique in the London Review of Books. Hat tip to Rachel Strohm.

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February20104

Prozac no better than a placebo?

One team of researchers wondered if antidepressants were “a triumph of marketing over science.”

Full story here.

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