The Great Game

You are not the only one controlling your mind.

Approximately one-quarter of Americans host a parasite that has been shown to affect personality in both rodents and humans. According to a recent study, this single-celled organism may be able to shape entire cultures.

In a paper published in the online edition of Proceedings of the Royal Society, United States Geological Survey researcher Kevin Lafferty argues that a significant factor in why some countries exhibit higher levels of neuroticism than others may be the prevalence of the parasite Toxoplasma gondii. The study also indicates that it may influence a society's preference for strict laws, an expression of uncertainty avoidance, and its valuation of 'masculine' priorities such as competitiveness and financial success over 'feminine' values like relationship-building.

"Toxoplasma appears to explain 30% of the variation in neuroticism among countries, 15% of the uncertainty avoidance among Western nations and 30% of the sex role differences among Western nations," Lafferty said via e-mail.

There is more here.

And here.

# posted by Jacob @ 8/22/2006 11:11:00 a.m.