Does porn stop young men being violent?

A list of the most interesting academic and popular articles that came to our attention this week...

Welcome to the Aporia Research Roundup. Every Monday (at 7am New York, 12pm London), we compile the most interesting studies and articles being shared in our network. We also try to link to a classic, often under-read, study each week. You might also find the occasional documentary, Twitter thread, or podcast.

The first three links are always free, but we put our favourites (including the less politically correct ones) behind a paywall, to encourage you to support our work.

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Migration, Population Composition and Long Run Economic Development: Evidence from Settlements in the Pampas. Federico Droller studies the impact of population composition on long-run economic development in Argentina, and finds that counties with higher European population shares in 1914 have greater GDP per capita 80 years later.

The Intelligence of the Chinese and Malays in Singapore. In a classic article from 1977, the recently deceased Richard Lynn (with whom we will soon be publishing an interview) showed that Chinese people in Singapore born around 1963 obtained an average IQ of 110, casting doubt on poverty as an explanation for low IQ among black Americans (since at the time, Singapore was much poorer than the US).

Twitter thread by Spencer Greenberg. In a previous study, Spencer Greenberg and colleagues asked participants if they’d ever taken an IQ test and, if so, what was their score. They also measured participants’ IQ themselves. Participants overestimated their IQ, based on memory, by 17 points on average.

At any measured IQ, self-reported IQ is substantially higher.