Conducting Research with Marginalized Populations: Methodological, Ethical, and IRB Considerations

Marginalized populations, such as people experiencing homelessness and immigrants, are seen as among the most challenging populations to study, both methodologically and ethically. Although there are basic guidelines on how to conduct research with majority populations, the relative lack of published guidelines on how to conduct ethical and scientifically rigorous research with marginalized populations can make researchers apprehensive about seemingly unending questions from grant reviewers and institutional review boards (IRBs) concerning research ethics and the safety of human subjects. As a result, there is a persisting gap in research conducting large-scale studies on these populations outside of community organizations and clinical and institutional settings. We emphasize the calls of prior research to streamline IRB processes further to study vulnerable groups. In this paper, we focus on the study of people experiencing homelessness, yet we have used related methods to study immigrants, including those who may be undocumented. We provide guidelines derived from successful social scientific studies on homelessness and immigrants, which can be used to help ease IRB approval for other researchers to gather important data. The benefits of social science research on hard-to-reach populations often outweigh possible risk. By helping to increase research on hidden populations, we can improve the scientific rigor of all research and make important contributions to knowledge.