Splitting (psychology)
Splitting, also called binary thinking, dichotomous thinking, black-and-white thinking, all-or-nothing thinking, or thinking in extremes, is the failure in a person's thinking to bring together the dichotomy of both perceived positive and negative qualities of something into a cohesive, realistic whole. It is a common defense mechanism, wherein the individual tends to think in extremes (e.g., an individual's actions and motivations are all good or all bad with no middle ground).