Although guidelines for ethicalities of applied anthropology are put forth by major anthropological organizations—including the American Anthropological Association (AAA), the Society for Applied Anthropology (SFAA), and the National Association for the Practice of Anthropology (NAPA)—it is increasingly difficult to ensure that the high volume of worldwide anthropologists proceed with their research in ways that are both culturally relative and sensitive to community needs. Kedia and Van Willigen describe the myriad roles an applied anthropologist must play as effective resource for communities in need; a researcher must be an advocate, cultural "broker", evaluator, policy researcher, public participation specialist, and research analyst.