Principle Incomprehension
From Rest of What I Know
Principle Incomprehension is the inability to detect principled actions in others. Usually, people make this claim by saying they don't understand why someone would support a thing that they have no or negative interest in. The most common example is:
Poor people keep acting against their own interest by voting for tax cuts
But it's much less likely that these people are rationally evaluating all the possibilities and deciding that tax cuts are the optimal choice. Instead, they are probably just going with what they believe is right and after some degree of certainty, that is what a principle is.