“Overall, liberalizing prostitution laws was linked to a significant decrease in rape rates, while prohibition was linked to a significant increase—but the magnitude of these two shifts was far from equal. Rather, “the magnitude of prohibiting commercial sex is about four times as large as that of liberalizing it,” write Gao and Petrova.
The average rape rate in the sample countries was nine rapes per 100,000 people. Countries that liberalized prostitution laws saw a decrease of approximately three rapes per 100,000 people, relative to countries that did not change their prostitution laws. Meanwhile, countries that banned or further criminalized prostitution saw an increase of around 11 rapes per 100,000 people, relative to the control countries.”
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“Gao and Petrova do offer the caveat that “changes in prostitution laws might not be random. It is possible that a country changes the laws as part of a general program to improve women’s social status and is thus instituting other policies that may affect rape rates,” and although they attempted to control for this in various ways, these techniques “may not fully address the possible nonrandomness of prostitution laws.””
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“their findings are in line with a spate of previous research linking liberalized sex work laws to decreases in sexual violence. For instance, a 2018 study showed that rapes in Rhode Island decreased when the state temporarily decriminalized indoor prostitution. A 2017 study found fewer sexual assaults after legal street prostitution zones were opened in 25 Dutch cities. Another 2017 study linked the launch of Craigslist “erotic services” ads in various U.S. cities to decreases in female homicide rates.”