Is being a nice person more about upbringing, or are some people just born that way. A new study highlighted by Science Daily says it might have to do with our genes.

For the study, researchers focused on the hormones oxytocin and vasopressin, and how it affects social behaviors on a larger scale. Participants were polled on pro-social behavior: urge to give to charity, for instance, or to more readily participate in such civic endeavors as paying taxes, reporting crime, giving blood or sitting on juries.

Participants who said considered life to be "threatening" were less likely to help others, unless if they had versions of the "nice" receptor genes, which "allow you to overcome feelings of the world being threatening and help other people in spite of those fears." So basically, one's perceptions of the world combined with these genes makes it easier to predict a person's level of generosity.