http://psych2.phil.uni-erlangen.de/~oschult/humanlab/publica...
"Thus, high levels of testosterone are associated with willingness to incur greater risk in both sexes."
In my experience, this view has loose ties to ADHD, specifically regarding the hunter-farmer hypothesis: https://en.wikipedia.org/wiki/Hunter_vs._farmer_hypothesis
Doesn't say it in the article, but Hartmann's main book on ADHD discusses how he tested an African tribe for ADHD. 100% of those tested were "positive" for ADHD.
I believe we're looking at evolutionary aftereffects of generations of family-based societies where men hunt and women run the family.