







A re-analysis of Ciacci's (2024) "Banning the purchase of sex increases cases of rape: Evidence from Sweden" Journal of Population Economics reveals major issues. A year ago, reproducers Adema, Folke, and Rickne found coding errors driving the paper's key results. Let's unpack this in a 🧵
May 9, 2025 at 12:21 PM
Comment on “Banning the purchase of sex increases cases of rape: evidence from Sweden”
Journal of Population Economics -
Additional evidence on the effects of banning the purchase of sex on cases of rape in Sweden
I discuss (Ciacci J Popul Econ 37:37 2024) and provide additional results of a regression discontinuity in time model showing that the result that the ban affected cases of rape is not robust.

Real Rape — Harvard University Press
Many men believe that they can force women to have sex against their will and that it isn’t rape—at least, not if the man knows the women and doesn’t beat her up or wield a weapon. The law’s casual treatment of such rape cases is the subject of this pioneering book, which is both a powerful exposé of the often shocking facts and a trenchantly written call for reform.

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531 votes, 156 comments. Hi, salacious title, I know. I’m linking articles from Time Magazine and the SF Standard And here is a thread with LOTS of…
Andreas De Block on Twitter / X
It took Nature three years to publish this rebuttal, which clearly demonstrates the fundamental flaws in the original paper. In the meantime, the paper's conclusions influenced scientific debate and policy decisions. Such delays in correcting flawed research do real damage. https://t.co/QI3Ei3PE70— Andreas De Block (@DeblockBlock) August 13, 2026
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Image credit: Yosi Prihantoro via Unsplash: https://unsplash.com/photos/man-in-gray-long-sleeve-shirt-and-black-pants-sitting-on-white-floor-tiles-gXUEQEtpjMs

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🚨 REPLICATION REPORT UPDATE: One year ago, a tweet by John Holbein alerted me, @ollefolke.bsky.social, and @jopieboy.bsky.social to a paper with a shocking result about Sweden’s law criminalizing the purchase of sex.🧵
Polymarket allowed users to bet on whether any one of the 7 defendants in the Cornell rape case will be charged with a felony sex crime and the market did almost HALF A MILLION DOLLARS IN VOLUME
Polymarket Removes Cornell 7 Market After Blowback
frontofficesports.comGood news, everyone! I have a short piece coming out in The Conversation on Monday that explains the main issues with this study. It's impossible for me to have the same media reach as the original press release. So I'd be extremely grateful if people could help me share it as widely as possible 🙏
G. Willow Wilson
Good news, everyone cnn.com/2026/05/14/health/arts-ageing…
Update: We submitted the comment to the Journal of Population Economics, and today we got a desk reject with this motivation. However, we do not know their conclusion about the main results and why the paper was not retracted. Clearly, they do not hold. 1/4
Johanna Rickne
🚨 REPLICATION REPORT UPDATE: One year ago, a tweet by John Holbein alerted me, @ollefolke.bsky.social, and @jopieboy.bsky.social to a paper with a shocking result about Sweden’s law criminalizing the purchase of sex.🧵