Sharlene Kaye is a Research Fellow at NDARC. Since joining in 1994, she has worked on several projects, including a major study of Antisocial Personality Disorder among injecting drug users and the Illicit Drug Reporting System. She completed her PhD at NDARC in 2003 which examined the patterns and harms of cocaine use. Sharlene has worked on studies examining fatal and non-fatal cocaine overdose, psychostimulant-related deaths across Australia, and organic brain damage following opioid overdose. She recently completed an investigation into the diversion and misuse of stimulant medication for ADHD among illicit psychostimulant users and, in collaboration with colleagues from the University of Qld and Deakin University, is about to embark on a study of the non-medical use of prescription stimulants among Australian university students. Her interest in the comorbidity between ADHD and substance use has led to her current involvement in two international multi-site studies of the prevalence and correlates of ADHD among people with substance use disorders and she is a board member of the International Collaboration on ADHD and Substance Abuse (ICASA).