Dr. Feinstein's multiple sclerosis (MS) research has delineated the natural history of cognitive and emotional abnormalities and how these correlate with brain pathology as visualized on brain magnetic resonance imaging (MRI). His current MS work aims to develop novel computerized tests focused on attention, information processing speed and working memory. A series of studies is also in progress investigating the cognitive effects and functional brain changes associated with cannabis use in people with MS.
His post-traumatic stress disorder research has been funded by United Nations Educational, Scientific and Cultural Organization and the Freedom Forum and is devoted to understanding how journalists cope with the hazards of reporting on war. His behavioural research in Namibia was funded by a Guggenheim Fellowship.
Dr. Feinstein is also doing collaborative work with the department of psychology in Botswana to develop self-report rating scales to assess psychological illness.