I'd have to agree with you that more tests are needed. Just one 2007 paper isn't quite enough to convince me that this is a real thing. Still, it has been well documented that Toxoplasmosis has a significant effect on the behavior of mice so there is a definite possibility that the microbe can affect the behavior of other mammals like us.
Nice article.
Yes, of course, @tking77798. Even though most of the papers published in a variety of journals regarding how people who were infected tend to take a risky course of action, doesn't mean business courses is one to beat.