V. likely that some readers will misunderstand the implications of this – it means the anti-bullying program *worked*, in that it reduced the social/environmental factors contributing to bullying.
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Obviously the most significant effect from my perspective is that heritability rises after intervention. That's my baseline for all equity efforts.
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Personality is very heritable, and schools are training students to be emotionally weak. This study has uncomfortable implications.
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Is anyone going to test whether bullying is actually beneficial to child development, or are we all just assuming it's a bad thing? I mean, if it's hereditary, then we've evolved to be this way for good reasons.
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Bullying is probably like many social behaviors in adolescence: practice for adulthood. Some people naturally tend toward violence & chaos; others, toward coalition-building & cooperation. Which strategy wins depends on context.
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I feel like I would trust this more if it was GCTA than twins, the confounds in twin studies seem quite significant here.
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If you have a moment could you explain what is meant by "broad sense" heritability?
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It includes additive (double the genes make double similarity) and non additive (one gene can drastically increase similarity) heritability.
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"grounded in genes" (taken from 1977) - jawdropping how this still goes into a journal in 2020.
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