I'm really not sure how that's true...not everyone responds to the same dose of meds some people are on really low doses like risperidone 1mg and it's enough for them...a lot of it depends on how you metabolize the particular drug. When I was on abilify the AP effects aren't supposed to kick in till 10 mg but I was on 7.5 mg for a year and was fine...as I tapered off of them I noticed new effects at every lower dose so they were definitely doing something...