Why Dopamine Makes People More Impulsive

Over the past few decades, the neurochemical dopamine has earned the reputation of being the brain’s reward molecule.  This image is built on observations that when animals and humans experience surges of dopamine, they feel rewarded and motivated to pursue more of the experience or substance which triggered the dopamine release.  Researchers theorize that this neurochemical is at the root of an ancient system that evolved to make us feel gratified and thus more likely to approach situations and objects that might satisfy our needs — anything from nutrition to the more sophisticated desires for social approval or even money, a universal ticket for access to most resources.Continue reading

A Tale of Monogamy and Dopamine

In a recent hack, private information from nearly 30 million users was leaked from Ashley Madison, a “dating” website intended to facilitate extramarital affairs.  The sheer number of Ashley Madison users on this website raises some age-old questions of monogamy: is it instinctual, or even healthy?  What is it about our brains that cause some to seek monogamy and others to reject it?Continue reading