"Our study indicates that we think women's welfare should be preserved over men's," said Oriel FeldmanHall, a post-doctoral researcher at New York University.
In one experiment, study subjects read one of three versions of a "Trolley Dilemma" - a commonly used technique in psychology studies.
In the trolley scenario, subjects read one of three versions of the dilemma, where each vignette described a man, woman, or gender-neutral bystander on the bridge.
The results showed that both female and male subjects were much more likely to push the male bystander or one of unspecified gender than they were the female bystander.
In a second experiment, a new group of subjects was given 20 pounds and told that any money they held at the end of the experiment would be multiplied up to 10-fold, giving them as much as 200 pounds. However, there was a catch.
The subjects were told that if they decided to keep the money, these individuals would be subjected to mild electric shocks. However, if they gave up the money, it would prevent the shocks from being administrated.
As with the first experiment, women were less likely than men to be subjected to shocks, suggesting an aversion to harming females - even when this came at the subjects' own financial expense.
However, while both female and male subjects were less likely to shock females, women in particular were less willing to shock other women.
Overall, the answers of both female and male respondents suggested that social norms account for greater harming behaviour toward a male than a female target - women are less tolerant to pain, it is unacceptable to harm females for personal gain, and society endorses chivalrous behaviour.
Furthermore, these perspectives were not linked to emotion-subjects found harming men and women to be equally emotionally aversive.
The study was published in the journal Social Psychological and Personality Science.
