This research was conducted in the Psychiatry and Neuroscience Departments of Icahn School of Medicine at Mount Sinai, New York, NY 10029 in 2016. My mentor for this research was Dr. Muhammad Parvaz. The research focused on neural effects (Error-Related Negativity) of childhood trauma and cocaine addiction. I presented this project to the BIC Symposium, AAN Neuroscience Research Prize, LISC, and WAC Research Association.