Glossary
Splitting.
Splitting is the psychological defense mechanism in which a person cannot hold mixed or contradictory feelings about another person — or about themselves — and instead oscillates between all-good and all-bad views. It was foundational to Melanie Klein's object relations theory and was elaborated by Otto Kernberg in his framework for severe personality disorders.
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Definition
In healthy development, the capacity to hold complex feelings about a person — to be angry with someone you love, to be disappointed in someone you respect, to recognize someone's good qualities without dismissing their bad ones — is a developmental achievement of early childhood. Splitting is the absence of that capacity. Without it, the person can experience the other only as wholly good or wholly bad at any given moment; the experience flips when the situation changes.
Splitting is closely related to impaired object constancy. Where object constancy is the capacity to hold a stable representation of someone across time and emotional state, splitting is the failure of that capacity, producing the lived oscillation.
How it shows up
In a relationship with a pathological narcissist, splitting is the underlying mechanism of the abuse cycle. The idealization phase is the all-good representation; the devaluation phase is the all-bad. Within a single conversation, splitting can produce extreme swings — the partner is loved, then the partner makes a comment that registers as criticism, and within minutes the partner is contemptibly bad. The next morning the partner is loved again.
The narcissist generally has no awareness of the swing as a swing. From inside their experience, the partner is bad now because they are bad; the partner was good earlier because they were good. The two states do not connect into a single, complicated person.
Splitting applied to the survivor
Survivors of splitting often describe the experience of being two completely different people in the relationship: the wonderful partner of the good days and the terrible person of the bad days. Both are them; neither is them; the gap between the two is unbridgeable. Many survivors spend years trying to identify what they did to cause the swing, on the implicit assumption that they have caused it. They haven't. The swing is, structurally, an internal feature of the narcissist's psychology playing out on the relationship.
Implications
Splitting is generally not amenable to reasoning. Inside the bad phase, no argument from the survivor about the good qualities they had been credited with the day before will land — those qualities, in that moment, do not exist for the narcissist. The good phase will return, but on its own schedule, not in response to the survivor's effort. Recognizing this can liberate the survivor from the years-long effort to be perfect enough to keep the relationship in the good phase. The effort was structurally impossible to succeed at.
