From an ethical point of view, the inclusion of children and young people in research is problematic due to their inability to give informed consent and meaningfully express their views. The ethical aspects of research are multiplied if the research participant might have experienced child abuse, neglect, exploitation, or other forms of violence or assisted in such acts. Talking about victimization might be difficult and generate a sense of betrayal of attachment figures. On the other hand, the usual ethical procedure of asking parents or other caretakers to give consent for their children to discuss issues of maltreatment gives them the power to act as gatekeepers to stop children from participating in research. Therefore, researchers should contemplate if parental consent should be waived and how research can be developed to mobilise children's agency and ensure their meaningful cooperation in researching different aspects of violence that affect them. This chapter presents and critically analyses different research examples and discusses their ethical dimensions from a children's rights perspective. The research questions start with discussing the utility of consulting children in research on maltreatment; the gatekeeping role of caregivers; the distress and harm eventually caused to children and young people by participation in research and the benefits of participation for children. The survey examples discussed lead to the conclusions that research on maltreatment might sometimes cause distress; caregivers' power to refuse consent for their children's participation in research on maltreatment can alter epidemiologic data and impede children's right to express their opinion on issues that are central to their lives and therefore, it should be waived; consulting children is essential for