Social work is a professional and academic discipline committed to the pursuit of social welfare, social change and social justice. The field works towards research and practice to improve the quality of life and to the development of the potential of each individual, group and community of a society. Social workers perform interventions through research, policy, community organizing, direct practice and teaching. Research is often focused on areas such as human development, social policy, public administration, program evaluation and international and community development. Social workers are organized into local, national, continental and international professional bodies. Social work, an interdisciplinary field, includes theories from economics, education, sociology, medicine, philosophy, politics, psychology, and as well as anti-oppressive and anti-racist discourse.