Why They're 100% Certain You're the Villain: A BPD Researcher Explains "Splitting"
If you've loved someone with BPD, you know the moment: you go from being the most important person in their world to the worst person alive, and they are completely certain about it. No doubt. No memory of the version where you were perfect.
In my conversation with Dr. Carla Sharp, one of the leading personality researchers in the world, she put a name to what's happening: psychic equivalence. In that state, whatever is in the mind feels indistinguishable from reality. She compares it to a small child in an Elsa costume who doesn't feel like Elsa. She is Elsa. During a split, the all-bad version of you isn't a manipulation tactic. In that moment, to them, it is simply true. They cannot see another perspective.
It doesn't excuse the harm. It won't make you less hurt by it. But it explains why arguing never worked. You were trying to reason with someone whose certainty was running at 10 out of 10, and certainty at that level isn't open to evidence.
The part I found most useful, and that I think helps anyone who's been on the receiving end: Sharp's antidote is to distrust certainty itself. When the feeling is absolute, that's exactly the moment to step back, lower it from a 10 to a 6, and ask for clarification instead of acting on the story in your head. That's advice for the person with BPD. But it's also a quiet gift for the rest of us, because the same trap catches everyone: the more certain we feel about what someone really meant, the less we actually know.
Understanding this doesn't mean staying or that what occurred was okay. It just gives you something most of us never got — an explanation for the thing that made no sense.
Full conversation at the links below. Hope this is helpful!
Spotify: https://open.spotify.com/episode/3xOpFFzjXBBTU0zPn7hqtJ
YouTube: https://youtu.be/xADsXc_YCO8
Apple Podcasts: https://podcasts.apple.com/us/podcast/might-ramble-podcast/id1840386628
Substack: https://mitchellpenningroth.substack.com/p/21-dr-carla-sharp-borderline-personality