"Soldier Mindset" or "motivated reasoning." It's this phenomenon in which our unconscious motivations, our desires, and fears, shape the way we interpret information. Some information, some ideas, feel like our allies. We want to wind and defend them. Other information or ideas are the enemies.
"Scout Mindset." It's the drive not to make one idea win or another lose, but just to see what's really there as honestly and accurately as you can, even if it's not convenient or pleasant.