Time Magazine science writer Maia Szalavitz interprets ...

[0] "Your Drive to Compete May Come Down to Dopamine" http://healthland.time.com/2012/05/02/your-drive-to-compete-...

[1] "Amphetamine Spurs Slackers to Work and Workers to Slack — at Least For Rats" http://healthland.time.com/2012/03/29/amphetamine-spurs-slac...

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... some research by Michael T. Treadway and nine others.

[2] "Dopaminergic Mechanisms of Individual Differences in Human Effort-Based Decision-Making" http://www.jneurosci.org/content/32/18/6170.full

> " ... We found that individual differences in [dopamine] function in the left striatum and ventromedial prefrontal cortex were correlated with a willingness to expend greater effort for larger rewards, particularly when probability of reward receipt was low. ... "

You could argue that this mechanism is a neurochemical amplifier of entrepreneurial behavior.

this is interesting research but describing it as "a neurochemical amplifier of entrepreneurial behavior" is both premature & absurdly reductive - the equivalent of people referring to oxytocin as "the love hormone". and I don't see a solid ADD/ADHD connection