All Moral Disagreement Comes Down to These 5 Principles

Doctors Haidt and Graham […] argue that there is great debate over the nature of right and wrong, but that the debate is over the meaning of five moral foundations rather than over what morality is — most of the time. Those five foundations are:

Harm/care: This foundation is based on our neurological tendencies to attachment, compassion, and our feelings towards those who cause harm.
Fairness/reciprocity: This foundation is all about our innate understanding of when we are not being treated fairly, something many animals have as well. This foundation is used as a basis for a wide range of ideas, including justice, freedom, and autonomy.
Loyalty: This foundation relates to our ability to form large, organized, cooperative groups of people who are not related. It is the driving force behind ideas such as shared sacrifice, patriotism, and the manifestation of tribal thinking.
Authority: This foundation was shaped by the history of hierarchical social interactions. It includes deference to authority viewed as legitimate and respect for traditions for their own sake.
Purity: This foundation is based on the psychology of disgust, a vital element in psychological evolution. It relates to any notion of finding virtue by controlling what you do and don’t do with your mind or body. Not only does this include conservative notions of chastity, but can also include such ideas as how pure your food must be, what bodily activities are morally good and evil, and what drug usage (if any) a person views as morally legitimate.

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We do share the foundations, so say the researchers, but we don’t share them equally. Their studies show that while most everybody places a high value on fairness and harm prevention as cornerstones of morality, not everyone agrees on the significance of the other three values.

While the first two values, harm and fairness, cover how you treat other people, the last three relate to group membership and tradition. Individuals determined to be open to new experiences tend to view the first two foundations — harm/care and fairness/reciprocity — as the most vital, while people who are more disposed to routine and familiarity placed no special value on the first three. It was also found that open individuals placed greater value on the first two precepts, but not nearly as much on the last three; while more routine people tended to view all five elements as being vital to morality.