This volume of the Research in Global Child Advocacy Series explores participatory methodologies and tools that involve children in research. Perspectives on the role of children have transitioned from viewing children as objects of research, to children as subjects of research, to acknowledgement of children as competent contributors and agents throughout the inquiry process. Researchers continue to explore approaches that honor the capacity of children, drawing on diverse methodologies to elevate children's voices and actively engage them in the production of knowledge. Nonetheless, despite these developments, questions over the extent to which children can be free of adult filters and influence merits sustained scholarly attention. The book includes chapters that critically examine methodological approaches that empower children in the research process. Contributions include empirical or practitioner pieces that operate from an empowerment paradigm and demonstrate the agenic capacity of children to contribute their perspectives and voices to our understanding of childhood and children's lives. The text also features conceptual pieces that challenge existing theoretical frameworks, critique research paradigms, and analyze dilemmas or tensions related to ethics, policy and power relations in the research process.