We examine why developed societies are monogamous while rich men throughout history have typically practiced polygyny. Wealth inequality naturally produces multiple wives for rich men in a standard model of the marriage market. However, we demonstrate that higher female inequality in the...

The Israeli matriculation certificate is a prerequisite for most postsecondary schooling. In a randomized trial, we attempted to increase certification rates among low-achievers with cash incentives. The experiment used a school-based randomization design offering awards to all who passed their...

This paper presents evidence about the effect of individual monetary incentives on English and math teachers in Israel. Teachers were rewarded with cash bonuses for improving their students' performance in high-school matriculation exams. The main identification strategy is based on measurement...