保守とリベラルの認知スタイルが、前帯状皮質及び右扁桃体の体積と関連していることを示した研究がある。 [Ryota Kanai, Tom Feilden, Colin Firth, and Geraint Rees: "Political Orientations Are Correlated with Brain Structure in Young Adults," Current Biology, Apr. 7, 2011] Summary Substantial differences exist in the cognitive styles of liberals and conservatives on psychological measures [1]. Variability in political attitudes reflects genetic influenc