Dr. Clark’s research areas are: (1) an examination of brain correlates of mental disorders such as drug and alcohol dependence and schizophrenia, and (2) use of brain stimulation methods such as tDCS to improve cognition and learning in healthy people, and to treat symptoms of brain and mental illness. Projects currently underway in the PCNC include the use of brain stimulation to enhance decision making, learning and memory, and such tasks as spelling and object detection, in healthy subjects, and improving cognition in young adults with fetal alcohol spectrum disorder and schizophrenia.