Dr. Bell's research interests include the treatment and prevention of Alzheimer's disease through clinical trials, and she is the director of the Alzheimer's Disease Clinical Trials Group at the Taub Institute. As the Director of the Minority Recruitment Core for NIA-funded Alzheimer's Disease Cooperative Study, she spear-headed a national effort to achieve ethnically diverse enrollment in Alzheimer's disease clinical trials. Dr. Bell is the leader of the Education Core of the Alzheimer's Disease Research Center at Columbia University, and has developed physician and community education programs.