More Sex Meant Safer Sex in Thailand: Counterintuitive Economic Theory

Steven Landsburg has to be one of my favorite authors: contrarian in all the right ways, ruggedly skeptical, utterly unafraid to buck conventional wisdom. There’s never guarantee that you’ll agree with what he argues (at least at first), but you will be entertained, engaged, and forced think of issues from entirely new angles.

His most recent book (sadly not that recent) was More Sex Is Safer Sex: The Unconventional Wisdom of Economics, in which he argued (among many other things) that there were social situations in which increased promiscuity amongst the sexually prude could actually reduce the transmission of disease. Indeed, he argued that prudishness was, in some cases, as much a socially harmful vice as sleeping around.

His argument was essentially theoretical, but it wasn’t entirely out of the blue: it was based on research by another economist, Michael Kremer and some pretty solid models of sexual behavior and disease transmission.

And now, it seems like it’s no longer even just hypothetical.

That’s because, according to Marginal Revolution blogger Alex Tabarrok, the recent history of Thailand provides a real world example of more total sex leading to a reduction in disease transmission. A drastic, culturally driven increase in normally chaste women engaging in premarital sex coupled with a (not causally unconnected) drop in the number of men going to prostitutes cratered the rates of HIV transmission: even in sex workers.

And to top it all off, the place where Alex Tabarrok discovered this little gem? Elizabeth Pisani’s new book called “The Wisdom of Whores.” It’s all enough to make social conservatives scream.

Of course, in all seriousness, those conservatives have plenty of worthwhile concerns. And just as a disclaimer before you run out and lose your virginity in the service of public safety: the particular effect here relies on a particular sort of sexual situation that may or may not have any relevance to your society. And in any case, it still unavoidably involves the former prudes taking on more risk to their own health in order improve the lives of others. So, please, read the books instead of rushing out to do anything foolish and frisky just on my word.

Elizabeth Pisani explains it all herself here:

Isn’t counter-intuitiveness grand?

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2 Responses to More Sex Meant Safer Sex in Thailand: Counterintuitive Economic Theory

  1. If you want a two-minute run-down of how it works, you can find it in this YouTube video:

  2. Bad says:

    Thanks for the pointer! Great way to get the word out, and you’ve added another book to my unfortunately long list (I’m still steaming that my local Borders aren’t stocking Carl Zimmer’s new book on E. Coli)

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