We need your help to learn more about brain functioning. We would like participants to learn more about the relationship between brain functioning and behavior in health and disease. WHO: Males and females between 18-60 years old who do not have any history of psychosis, and whose first degree relatives have no history of psychosis. OR Males and females between 18-60 years old who have schizophrenia, bipolar disorder, schizoaffective disorder, or any type of psychosis. WHERE: University of Georgia in Athens, GA WHAT: Approximately 1-4 days (up to 6 hours per day) including: Interview with trained researcher Eye Tracking Brain activity recorded using MRI and EEG technology YOU WILL BE PAID $20/HOUR FOR YOUR PARTICIPATION Please contact Isaac at (706) 542-3128 OR (706) 680-6141 for further information.