Scott responds to comments about Lynn's IQ data, addressing how IQ testing might break down in under-educated populations and how this relates to the apparent disconnect between test scores and real-world capabilities. Longer summary

This post discusses comments on a previous article about Lynn's IQ data and African nations. Scott addresses several key points raised in the comments, including: how IQ tests might break down when testing under-educated populations, the relationship between abstract vs. practical intelligence, the confirmation of Lynn's general findings by other data sources, genetic diversity in Africa, and the characteristics of people with very low IQs. The discussion touches on how people with supposedly very low IQs can still function well in certain contexts, suggesting that IQ tests might not capture all aspects of intelligence, especially in populations with limited exposure to abstract reasoning and formal education. Shorter summary

Scott Alexander shares and comments on highlighted passages from Garrett Jones' 'Hive Mind', covering various aspects of IQ research and its societal implications. Longer summary

This post is a collection of highlighted passages from Garrett Jones' book 'Hive Mind', along with Scott Alexander's commentary. The passages cover a wide range of topics related to IQ, including its measurement, cultural differences, effects on cooperation and voting behavior, and its relationship to national economic performance. Scott provides critical analysis and personal insights on these excerpts, often relating them to other research or raising questions about their implications. The post also touches on topics such as the Flynn effect, nutrition's impact on intelligence, and group dynamics in decision-making. Shorter summary

Scott Alexander reviews 'Hive Mind' by Garett Jones, which argues that national IQ matters more for economic success than individual IQ, while raising several criticisms of the book's methodology and conclusions. Longer summary

Scott Alexander reviews Garett Jones' book 'Hive Mind', which explores the hypothesis that a nation's average IQ matters more for its economic success than individual IQs. The book presents various studies and theories to support this idea, including how high-IQ individuals are better at cooperation and long-term thinking. Scott finds the book interesting but raises several criticisms, including questions about the direction of causality between IQ and development, and how the findings from small-scale experiments might apply to real-world nations. Shorter summary