Where would you rather live? In a multi-ethnic, mean IQ 130 country, or a single-ethnic mean IQ 100 country (same ethnic as you)?
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to ask about many compositions with different mean IQs, values and religious. Then regress and see what people really care about.
I don't think it will work well to just straight out ask how many IQs they think cultural homogeneity is worth. They may not know the answer
