Psychological research is fuzzier than most. Exes and ohs are less rigid, numbers not easily applicable. Still, it often produces ideas worth chewing. Here's an example which, happily, comports with a central belief of mine:
A research team led by social psychologist Daniel Sullivan of the University of Kansas reports on four studies that suggest people are “motivated to create and/or perpetually maintain clear enemies to avoid psychological confrontations with an even more threatening chaotic environment.” When you place their findings in the context of the many threats (economic and otherwise) people face in today’s world, the propensity to turn ideological opponents into mighty monsters starts to make sense.