Racial-ethnic differences refer to variations in experiences, behaviors, health outcomes, and other characteristics across different racial and ethnic groups. Researchers in this area seek to understand and explain disparities and inequalities that exist between racial and ethnic groups, and to identify the underlying factors that contribute to these differences. Studies in this field often focus on health disparities, educational achievement gaps, socio-economic status, access to resources, discrimination, and other social determinants of health and well-being. By understanding and addressing racial-ethnic differences, researchers aim to promote equity and social justice in various domains of society.