Consider the choice of monogamy – bonding and staying with a single partner. This would seem like a decision that involves your culture, values, and morals. All that is true, but there’s a deeper force acting on your decision making as well: your hormones. One in particular, called oxytocin, is a key ingredient in the magic of bonding. In one recent study, men who were in love with their female partners were given a small dose of extra oxytocin. They were then asked to rate the attractiveness of different women. With the extra oxytocin, the men found their partners more attractive – but not
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