You know this is actually one of the hardest things to deal with...you never actually know what is the meds unless you can get off of them...I actually haven't taken an iq test since getting off the meds but I know they decreased my ability to read fiction but not non fiction for some reason..they also changed my interests subtly...what I found fun or not music job whatever. They also enhanced some skills like typing...not sure why...but compared to active psychosis I think they enhanced my memory and stuff. I mean you basically don't know what is you,what is the illness and what is meds until something changes...