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The basis of our analysis is a model of personality reposing on three genetic traits: sanguinity (N), perfectionism (P) and aggression (A). The genes for traits N and A are entangled, in the sense that if one of the traits is absent, then the other must be present.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.