Mark manages 3ie’s Development Evidence Portal and leads on the production of evidence gap maps and systematic reviews. Before joining 3ie, Mark was a consultant for a number of development organizations, working on projects such as an experimental study examining how new evidence affects the decisions of policymakers, and exploratory research to identify the most cost-effective anti-poverty interventions. He also did project management and evaluation work on a programme using SMS reminders to increase vaccination rates in India. Mark has a PhD in Philosophy from the University of Maryland, a Masters in International Development, School for International Training and Bachelors in Philosophy, College of William & Mary, Virginia.