Middle path bias

Psychologists often hit us with a lot of jargon. When you research them, they turn out to be fairly regular feelings. For example, confirmation bias is our innate tendency to continually try to justify that we are correct even in the face of mounting evidence to the contrary. I often find myself experiencing this. Similarly, cognitive dissonance is the struggle we face when we seemingly have evidence to support both of two opposing view points.

I wonder why there is no such term called middle path bias to refer to most people's innate tendency to believe that their choice is the one that is closest to the middle path. Of course, I am jumping the gun in claiming that this is an innate tendency of most people. But, I certainly show this now and then and I have noticed it in a lot of other people. Lack of a term indicates lack of much study in this direction. I guess this is a good direction to investigate. For e.g., is this a common bias?, if it is common, what are the evolutionary reasons for this?, how does this affect peoples view points on socially important issues?, what are the best ways to address this bias? etc...