At our HIV Impact Evaluation Workshop in Cape Town, South Africa in 2009, I listened to Nancy Padian, a medical researcher at the Women’s Global Health Imperative, presenting a systematic review of random control trials testing the effectiveness of HIV prevention campaigns. The study she presented explained how three dozen HIV prevention campaigns had failed to change sexual behavior and reduce HIV incidence. The presentation gave us pause. The review dismissed the communication campaigns as an ineffective means to change behavior and slow down the HIV epidemic. A closer look revealed that the campaigns lacked inspiring narratives, and were communicated through outdated and uninteresting outlets such as billboards and leaflets.  The question we asked ourselves was: Can we do this differently? In 2016, the World Bank Development Impact Evaluation group (DIME) launched “Narrating Behavior Change”... — blog.wb.org/blogs