Here's the question, though: are the risk-taking humans risk-taking because they're infected, or are they infected because they're risk taking. Correlation, un

Here's the question, though: are the risk-taking humans risk-taking because they're infected, or are they infected because they're risk taking. Correlation, unfortunately, doesn't imply causation. The "fatal attraction to cat urine" studies are somewhat imperfect [1]. I'm friends with a student who's doing similar studies with mice but with better spatial discrimination . The consensus seems to be that while the fear response goes down, the idea that it's attractive to the rodents is more difficult to replicate. [1] Free at http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1690701/?tool=pubmed http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1690701/?tool=pu...