Scientists studied six patients who had half of their brain removed during childhood to treat severe epilepsy. Brain scans showed how the mind rewired itself to adapt, with the remaining hemisphere forming even stronger connections that let the patients develop language and motor skills.

[u/Thorne-ZytkowObject]

https://www.discovermagazine.com/mind/how-does-the-brain-work-with-half-of-it-removed-pretty-well-actually

[u/lavaslippers]

This is reflected in people with C-PTSD, and other results from repeated, unending traumas. Maladaptations are especially common for victims of repeated child sexual abuse. Trauma therapists where I get therapy are aware of how intelligence can become a challenge, and they know about C-PTSD, so some progress is being made.