191. Mismatch Negativity and Cognition Impairments in 22q11.2 Deletion Syndrome and Their Relationship to Symptoms

22q11.2 deletion syndrome (22q11DS) is a very robust genetic predictor of the development of psychosis and other psychiatric illnesses. We examined performance on a battery of cognitive tests and psychophysiological biomarkers known to be associated with psychosis-risk in 22q11DS and compared them to clinical symptoms.