The concept of tribalism is often used to explain American politics but is also wielded as a weapon. An expert might claim that tribalism is causing unwillingness to compromise, while a partisan might deride the tribalism of the other tribe. While this essay is not intended to explore the complexities of a rigorous definition of the concept, I will endeavor to discuss the matter in a neutral and rational way.
Tribalism is characterized by loyalty to the tribe. This differs from loyalty to principles or values. After all, a person who is loyal to a tribe because it is their tribe will remain loyal even when the values of the tribe change. In contrast, a person dedicated to values that a tribe just also happens to have at a certain time will leave that tribe if these values are abandoned. American tribalism involves value fluidity: as the tribe changes values, tribalists shift their values. For example, Republicans once endorsed free trade and opposed tariffs. They also professed to dislike deficits and spending. Trump, however, shifted these values and now the Republican tribe embraces tariffs, deficits and big government spending. Such is the power of tribalism that it trumps professed values.
It might be contended that tribes need values and principles to define them, hence this claim of fluidity is an exaggeration. However, the ease with which tribes shift values shows that it is real. People even develop myths that the values they profess now have always been the values of their tribe.
Tribalism has its origin in biology as humans are social animals and tribalism is the human equivalent of pack loyalty. Animals generally lack abstract principles or values, and this is one reason why tribalism trumps values—it is grounded in unthinking instinct. Tribalism is also fueled by cognitive biases. The most important is in-group bias, which is the tendency of people to see members of their own group as better than the members of other groups. This bias makes it easy for people to attribute positive qualities to members of their own tribe while easily assigning negative traits to those of other tribes. This probably also helps support value fluidity: whatever changes occur in the values professed by the tribe will still be seen as better than the values of other tribes. As might be expected, fallacious reasoning also plays a role in tribalism.
There is a fallacy, often called the “group think fallacy”, in which it is inferred that a claim is true (or something is good) because members of one’s group believe the claim (or hold to the values). This is obviously fallacious but has considerable psychological appeal. This also helps fuel value fluidity, since beliefs and values are not based on objective assessment, but by reference to the group. As would be expected, tribalism creates numerous problems.
One problem is that tribalism makes the professed values of the tribe meaningless. This is because loyalty is to the tribe rather than to the professed values. This does raise some interesting philosophical questions about the basis of tribal identity. It also creates a ship of Theseus style problem about whether there is a point at which a tribe has changed its professed values so much that it is no longer the same tribe. There are also some other interesting metaphysical problems about identity here as well in terms of what makes a tribe the same tribe across time and value changes.
A second problem is that tribalism encourages irrational behavior. They can often act contrary to what seem to be their own interests and against the general welfare because of the dictates of their tribal leaders. On the positive side, tribal leaders could issue commands that do coincide with the interests of the tribal members and the general welfare. However, this would be a matter of luck.
A third problem is that tribalism makes it easy for authoritarians to gain ready-made followers who happily serve them, no matter how terrible they are. Because of these problems, it would seem best to find ways to counter tribalism.
One obvious solution is improving critical thinking, so that people can recognize the defects behind and of tribalism. However, mere logic is obviously enough—people also need training in goodness and commitment to virtue, as per Aristotle. But tribalism provides its members with a defense against critical thinking and training in the virtues.