Dan Stalder answers.
As with most big “why” questions in social science, why men and women differ has two possible answers: nature and nurture. The differences might be biological (nature), but there are also strong differences in what parents, peers, and media model or expect for boys versus girls (nurture). Most of us conform to these expectations or gender roles. Nature and nurture can also interact, but in the case of morality, it might be just gender roles.
But let me step back and mention that there are probably more gender similarities than differences. Also, most of the well-known differences (not counting anatomical ones) are smaller than most people realize. However, a book titled Men Are From Mars and So Are Women is probably not going to sell as many copies as Men Are From Mars, Women Are From Venus. Most of us think less about similarities.
That said, there are of course meaningful differences between males and females, including what I found in my research about making mistakes. I drew from previous work that suggests we feel better about our mistakes if many others behave the same way. Well, even if most others do not behave the same way, we like to believe they do. In general, we overestimate the number of others who are guilty of our own misbehavior. We might say things like, “I’m not the first person who has done this,” “I’m only human,” or “Everybody makes mistakes.” In my research, after reading common sayings such as “Everybody makes mistakes,” “Nobody’s perfect,” and “Live and learn” (compared with a control condition), men but not women reported less regret, hypocrisy, and stupidity over particular mistakes (unsafe sex, wasting water during a drought, and stealing a car). Moreover, these sayings seemed to lead men but not women to trivialize the mistakes.
These findings do not mean that women are unaffected by social support. Indeed, women tend to seek more social support than men in times of stress. However, people’s own mistakes or bad behaviors seem to involve a different process. Peer-influenced bad behaviors are most likely among groups of boys (see Companions in Crime by Mark Warr). Warr suggested that there is peer pressure for both boys and girls to misbehave but that girls’ stronger “moral disapproval” of such behaviors acts as a stronger “barrier to peer influence.”
Thus, men’s immorality might be more influenced by peers than women’s because women are generally more opposed to immoral behaviors in the first place. My data (and other research) indicate that women do see such misbehaviors as more serious than men do. Why women show greater opposition could be due to gender roles. For example, it is more acceptable for boys to misbehave or to show aggression (“boys will be boys”). Similarly, some research on moral development suggests that boys and girls might develop different types of morality, where girls tend to develop a “care” perspective (caring about relationships and others’ pain). My mistake scenarios involved hurting others (at least disappointed parents), which might have raised women’s opposition. The care-perspective researchers suggest that this perspective is caused by the female gender role and girls’ identification with mothers who are usually the primary caregivers.
Another possible cause of my study’s gender difference is that men and women differ in their responses to ego threat. In other words, when men and women make mistakes, they try to feel better in different ways. Although the research is somewhat mixed, many studies show that men are more likely to use externalizing defenses such as projection, in which they project their own unacceptable impulses onto others. Some social psychologists have cited this male defense to suggest that men care more about peer-based norms in misbehaving. The ego-defense researchers again point to gender roles as the cause.
Although some gender roles can be influenced by biology, I suggest that how boys versus girls are typically raised to behave and see themselves underlies the differing use of peers in moral reasoning.
Dan Stalder is a professor of psychology at the University of Wisconsin-Whitewater.