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Why are some people trustworthy, while others lie, cheat and steal? Part of the answer may reside in a hormone called oxytocin. Claremont Graduate University's Paul Zak talks with WSJ's Gary Rosen about how a "vampire wedding" helped him understand how this chemical works to control trust, empathy and virtue.
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Vampire Diaries fans have already heard that season 4 may very well end with Elena (Nina Dobrev) graduating from high Read Post

For his book, The Moral Molecule, Paul J. Zak drew blood from a bride, groom and their parents, before and after the vows, to measure the oxytocin levels: The bride's oxytocin level shot up by 28% after the vows, "and... Read Post

In his new book, The Moral Molecule: The Source of Love and Prosperity, neuroeconomist Paul J. Zak discusses his research on oxytocin, what he calls the "moral molecule." For the past 10 years, Zak has been conducting the same kind ... Read Post