Fasting glucose will be measured at screening, week 4, and week 8 visits. This is done to monitor subjects for worsening glucose control. This is a possible concern due to the association between atypical antipsychotics, including risperidone, and hyperglycemia. Subjects who are discovered to either have diabetes or develop diabetes during the study, or who have worsening glucose control if diabetic, will be discontinued and referred to their PCP for further work-up and treatment. This additional blood test will not lead to additional blood draws but will simply be added to the subject's routine and mandated biweekly WBC monitoring.