I am a retard and it took me 20 years to figure this out!...
Posted by RT2... on Nov 19th, 2012
Delta 9 TetraHydracannibinol usage and its cannabinoids ages the hippocampus, Not only causing dementia like symptoms, but also the psychosis effects of the intoxication, which them becomes a standard schema base for the consumer.
In respect to the DSM-IV's reference to the THC induced Psychosis.
Also seen in adults who have been long term users of D-9-THC.