Inclusion Criteria for Subjects with schizophrenia and schizoaffective disorders:  Schizophrenia or schizoaffective disorder diagnosis verified by interview Diagnosis or initiation of antipsychotic medication was within last 5 years  Inclusion Criteria for Healthy Controls:  No known diagnosis of schizophrenia or schizoaffective disorder No history of depression, anxiety, bipolar disorder, PTSD, agoraphobia, panic disorder, or generalized anxiety disorder Negative assessment for psychotic symptoms on day of interview  Exclusion Criteria (for both groups):  Participants have a history of bleeding disorders or are taking blood thinners. Participants have a history of epilepsy, known genetic disorders Immunocompromised state (eg., receiving immunosuppressive therapy, transplant). History of brain-related disease (eg., stroke) Any uncontrolled medical disorder such as cancer. History of substance abuse or positive urine toxicology screen (including test for marijuana) on the day of the blood draw