In 2013 the LA County School District had a psychologist give expert testimony that a nine year old who was repeatedly raped (and sued the school district) suffered less emotional trauma because of her low IQ.
However, the Jury was not Having Any:
"In the end, the jury awarded the girl $1.4 million in damages, even though her lawyer had only asked for up to $12,500 to pay for therapy."
We need more juries like that one. Many, many more.