NPA personality theory
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Re: Geographic distribution of personality traits
Thanks for the idea. In terms of papers about NPA theory there are many that mention it. And it is a fact that conventional now wisdom accepts inheritance of personality. No definite genes have been accepted . The above article points out that dopamine activity appears to be reflected in approach behaviors as it triggers suppression of approach. In NPA theory traits N and A are not suppressed in approach so those with both traits are much more protected from schizophrenia or autism. Those people with only N or A are at risk of SZ or autism if they have genes or diseases that suppress their approach abilities. So though many gene loci are candidates it appears that COMT is major because it determines the supply of dopamine. Large amounts of dopamine tend to decrease approach behaviors.