Dr. Williams’s theoretical and empirical research has focused on racial and socioeconomic differentials in health. He has devoted considerable attention to identifying how life experiences directly linked to race affect health status and can explain racial differences in health. This has included developmental work on how perceptions of racial bias can affect health status. He has contributed to several integrative summaries outlining the conditions under which discrimination at both the interpersonal and the institutional level can adversely affect multiple indicators of health. Williams has also investigated how coping resources and strategies ranging from social support and religiosity to psychological attributes and health behaviors can modify the effects of stress on health. Much of his work has involved the analysis of large epidemiological studies. He has extensive experience with quantitative research strategies and in analyzing large, complex data sets. His current research includes studying the correlates of the health of Black Caribbean immigrants in the U.S., examining how race-related stressors (racial discrimination in the U.S. and exposure to torture during Apartheid in South Africa) can affect health, examining the biological pathways by which stress is related to health, and assessing the ways in which religious involvement can affect health.