Our research focuses on the roles of health disparities and cultural identity in normal cognitive aging and in the expression of cognitive dysfunction stemming from central nervous system disease.  All of our research is aimed at better understanding sources of variance in cognitive test performance and how these can contribute to establishing more equitable services for marginalized populations. We conduct these studies in the contexts  of  HIV infection, substance use, and under-represented communities.  We are also investigating perceptions of cognitive dysfunction and intergenerational transfer of cognitive style among adults who recently immigrated to New York City from other countries and their young adult children.