"Over a decade ago, "all human behavioral traits are heritable" was stated as the first law of behavior genetics". A new study looked at whether trust was affected by genetics.
The authors found that "genetic influences are smaller for trust, and propose that experiences with or observations of the behavior of other people shape trust more strongly than other traits".
(Score: 2, Informative) by Serial_Priest on Thursday April 10 2014, @04:24AM
One recalls Putman's paper a few years back exploring the influence of diversity on social trust (link: http://onlinelibrary.wiley.com/doi/10.1111/j.1467- 9477.2007.00176.x/abstract;jsessionid=2748E8803D04 561DE2516B540ADF2C27.f01t02 [wiley.com]). The upshot was that homogeneity is a determinant of altruism, community cooperation/involvement, friendships, "comfort"/safety. (In other words, a direct refutation of America's founding mythos.)