Conducting research with children raises additional ethical issues to research with adults. Research with migrants and refugees raises additional issues because of their mobility or uncertain political status. Power inequalities raises ethical issues with certain populations, while various populations are subjected to different vulnerabilities. Starting your exploration of ethical issues with the particular population you plan to conduct your research with can be another path to pursue. I think we should change some of the subdomains. Prisoners is not a group we have much information on. Therefore, I think we should remove it, but add Combatants, Former Combatants, and Torture Victims.