Probably cultural mythology, along the lines of “Seattle is gloomy and rainy” (Paris is much gloomier and rainier)
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I’m not so sure. My samples tend to confirm the hypothesis more than they disconfirm.
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Yes, but evidence for this is indirect. https://ajp.psychiatryonline.org/doi/abs/10.1176/appi.ajp.2011.10101532 … https://www.irishtimes.com/news/education/one-in-65-school-children-in-ireland-has-autism-diagnosis-1.2723434 … This is the connection i'm seeing: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2795360/ … which suggest higher prevalence of large amygdala associated genes and/or environmental effects leading to brain growth patterns.
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Though its sketchy, as ADHD, which is linked to genetically to autism, shows smaller amygdalas on average http://www.cnn.com/2017/02/15/health/adhd-brain-scans-study/index.html … and measurs of this depends on how you define violence. https://www.psychologytoday.com/blog/abcs-child-psychiatry/201705/the-link-between-autism-and-violence-isn-t-autism …
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Simon Baron-Cohen has conducted research in this area. The Science of Evil is a popular introduction to the topic.
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I think he studied Maori (among others).
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No but Koreans apparently don’t need deodorant http://www.verygoodlight.com/2016/12/14/koreans-dont-produce-body-odor/ …
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I am reading this Q as whether amygdala size has changed due to cultural conditioning (like London cab driver training increasing hippocampus size) and not as amygdala size being a cause. I would think so (1st case, not as cause)
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I think that in some cases it becomes a self fulfilling prophecy
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I imagine centuries of persecution have a cultural impact
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