Is there a benefit to augmenting treatment for schizophrenia by adding aripiprazole (a partial D2 agonist) to a full D2 antagonist such as haloperidol?  

I do not see the slightest benefit from that approach. We have gotten quite an impressive number of second-generation medications and absolutely could avoid polypharmacy with two antipsychotic medications adding up the risk of quite significant side effects and affecting patients negatively when the...