The family will invariably suggest that the bang on the head is what set off the psychotic disorder.

CNN: Can traumatic brain injury trigger mental health issues?

Twelve of the mitigating factors were unanimously rejected by the jurors, including the defense assertion that Moussaoui suffers from a psychotic disorder such as schizophrenia.

CNN: Moussaoui jury split on mitigating factors

Schizophrenia is a psychotic disorder.

BBC: 'Older fathers' link to schizophrenia