Raja Litwinoff, Stella Maranga, Claudia Neymeyer, Jasmin Rocha and Vera Siber kindly pretested our interview guides and survey instruments. More than two hundred development and evaluation professionals have contributed to the review by making themselves available for interviews (list of interviewees in annex), participating in our survey on evaluation effects, providing evaluation reports or other literature, and facilitating contacts. Ian Askew (Population Council), Sabrina Evangelista (UN Women) and Leigh Stefanik (CARE) were particularly active in sourcing evaluations and getting us in touch with evaluation stakeholders. We are immensely grateful for the time and efforts contributed, given generously and without any material compensation.