Religions are moral s. If you live in a religious community, you are enmeshed in a set of norms, relationships, and institutions that […] influence y… - Jonathan Haidt

Religions are moral exoskeletons. If you live in a religious community, you are enmeshed in a set of norms, relationships, and institutions that work primarily on the elephant to influence your behavior. But if you are an atheist living in a looser community with a less binding moral matrix, you might have to rely somewhat more on an internal moral compass, read by the rider. That might sound appealing to rationalists, but it is also a recipe for anomie — Durkheim’s word for what happens to a society that no longer has a shared moral order.63 (It means, literally, “normlessness.”) We evolved to live, trade, and trust within shared moral matrices. When societies lose their grip on individuals, allowing all to do as they please, the result is often a decrease in happiness and an increase in suicide, as Durkheim showed more than a hundred years ago.

Does helping others really confer happiness or prosperity on the helper? I know of no evidence showing that altruists gain money from their altruism, but the evidence suggests that they often gain happiness. People who do volunteer work are happier and healthier than those who don’t; but, as always, we have to contend with the problem of reverse correlation: Congenitally happy people are just plain nicer to begin with,24 so their volunteer work may be a consequence of their happiness, not a cause. The happiness-as-cause hypothesis received direct support when the psychologist Alice Isen25 went around Philadelphia leaving dimes in pay phones. The people who used those phones and found the dimes were then more likely to help a person who dropped a stack of papers (carefully timed to coincide with the phone caller’s exit), compared with people who used phones that had empty coin-return slots. Isen has done more random acts of kindness than any other psychologist: She has distributed cookies, bags of candy, and packs of stationery; she has manipulated the outcome of video games (to let people win); and she has shown people happy pictures, always with the same finding: Happy people are kinder and more helpful than those in the control group.

The authors pointed out that nearly all research in psychology is conducted on a very small subset of the human population: people from cultures that are Western, educated, industrialized, rich, and democratic (forming the acronym WEIRD). They then reviewed dozens of studies showing that WEIRD people are statistical outliers; they are the least typical, least representative people you could study if you want to make generalizations about human nature. Even within the West, Americans are more extreme outliers than Europeans, and within the United States, the educated upper middle class (like my Penn sample) is the most unusual of all.

Finding fault with yourself is also the key to overcoming the hypocrisy and judgmentalism that damage so many valuable relationships. The instant you see some contribution you made to a conflict, your anger softens — maybe just a bit, but enough that you might be able to acknowledge some merit on the other side. You can still believe you are right and the other person is wrong, but if you can move to believing that you are mostly right, and your opponent is mostly wrong, you have the basis for an effective and nonhumiliating apology. You can take a small piece of the disagreement and say, “I should not have done X, and I can see why you felt Y.” Then, by the power of reciprocity, the other person will likely feel a strong urge to say, “Yes, I was really upset by X. But I guess I shouldn’t have done P, so I can see why you felt Q.” Reciprocity amplified by self-serving biases drove you apart back when you were matching insults or hostile gestures, but you can turn the process around and use reciprocity to end a conflict and save a relationship.