Despite the challenges involved in fragile and humanitarian settings, effective interventions demand rigorous impact evaluation and research. Such work in these settings is increasing, both in quality and quantity, and being used for programme implementation and decision-making. This paper seeks to contribute to and catalyse efforts to implement rigorous impact evaluations and other rigorous empirical research in fragile and humanitarian settings. It describes what sets apart this type of research; identifies common challenges, opportunities, best practices, innovations and priorities; and shares some lessons that can improve practice, research implementation and uptake. Finally, it provides some reflections and recommendations on areas of agreement (and disagreement) between researchers and their commissioners and funding counterparts.

On 20 November 2009, the global community celebrates the 20th anniversary of the adoption by the United Nations General Assembly of the Convention on the Rights of the Child, the unique document that sets international standards for the care, treatment and protection of all individuals below age 18. To celebrate this landmark, the United Nations Children's Fund is dedicating a special edition of its flagship report The State of the World's Children to examining the Convention's evolution, progress achieved on child rights, challenges remaining, and actions to be taken to ensure that its promise becomes a reality for all children.