View Full Version : Is there a Liberal Gene?

28-10-10, 23:13
Friendships Moderate an Association between a Dopamine Gene Variant and Political Ideology (http://journals.cambridge.org/action/displayFulltext?type=1&fid=7909322&jid=JOP&volumeId=72&issueId=04&aid=7909320)

Basically the paper finds a link between a particular mutation of the Gene DRD4 and the number friends one had during adolescence with your political leanings as an adult.
Personally I think that they might be stretching a bit in their conclusions.

Scholars in many fields have long noted the importance of social context in the development of political ideology.
Recent work suggests that political ideology also has a heritable component, but no specific gene variant or combination of variants associated with political ideology have so far been identified. Here, we hypothesize that individuals with a genetic predisposition toward seeking out new experiences will tend to be more liberal, but only if they are embedded in a social context that provides them with multiple points of view. Using data from the National Longitudinal Study of Adolescent Health, we test this hypothesis by investigating an association between self-reported political ideology and the 7R variant of the dopamine receptor D4 gene (DRD4), which has previously been associated with novelty seeking. Among those with DRD4-7R, we find that the number of friendships a person
has in adolescence is significantly associated with liberal political ideology. Among those without the gene variant, there is no association. This is the first study to elaborate a specific gene-environment interaction that contributes to ideological self-identification, and it highlights the importance of incorporating both nature and nurture into the study of political preferences.
The rest of the paper at the posted link above.