TIME

Biology may have a lot to do with our behavior, especially in social situations. And that means our social interactions could be manipulated by a pill.

That’s what a new study, published in the journal Current Biology, suggests. A group led by researchers at University of California Berkeley and University of California San Francisco shows that by manipulating a brain chemical, people can become more compassionate and act in prosocial ways to equalize differences.

In the study, 35 men and women visited the labs two times; each time they were randomly given a pill that keeps levels of dopamine, which is involved in reward and satisfaction, or a placebo. Neither the participants nor the scientists knew which pills were given when. The volunteers were then asked to divide money between themselves and a strangers.

When the researchers analyzed the results, they found that when the people were given the…

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