Female headship and poverty in the Arab region: analysis of trends and dynamics based on a new typology / Shireen AlAzzawi (Santa Clara University), Hai-Anh Dang (World Bank, IZA, Indiana University and London School of Economics and Political Science), Vladimir Hlasny (UN ESCWA), Kseniya Abanokova (World Bank), Jere Behrman (University of Pennsylvania) ; IZA Institute of Labor Economics