Purpose – The paper aims to discover the role of the middle classes in the development of the ethnic minorities of China, given the importance of the middle classes in international economic development in the modern age. Design/methodology/approach – The paper offers a definition of the...

Purpose – The paper aims to discover the role of the middle classes in the development of the ethnic minorities of China, given the importance of the middle classes in international economic development in the modern age. Design/methodology/approach – The paper offers a definition of the...

This paper investigates whether differential treatment of men and women in the labor market is due to unobservable differences in productivity or if it is motivated by a taste for discrimination. While studies on sex-discrimination typically control for human capital (formal education,...

Little research has been done to examine discrimination against gays and lesbians in the labor market. Badgett (1995) conducted the only previous study investigating labor market outcomes of gays and lesbians using a random data set. However, due to the structure of the data, the wage...

Ineffective fundraising lowers the resources charities can use for goods provision. We combine a field experiment and a causal machine-learning approach to increase a charity’s fundraising effectiveness. The approach optimally targets fundraising to individuals whose expected donations exceed...

We formalize the optimal design of experiments when there is interference between units, i.e. an individual's outcome depends on the outcomes of others in her group. We focus on randomized saturation designs, two-stage experiments that first randomize treatment saturation of a group, then...

We report results from a large randomized natural field experiment conducted in southwestern China in the context of insurance for sows. Our study sheds light on two important questions about microinsurance. First, how does access to formal insurance affect farmers' production decisions? Second,...