With the aim of limiting global warming, environmental subsidies are a popular public finance instrument to reduce carbon emissions. However, there is little evidence on why subsidies are effective in increasing demand for the goods subsidized. We use a framed field experiment to disentangle and...

This paper provides novel insights into the science of scaling by examining an educational mentoring program in Mexico. Our analysis encompasses two separate field experiments, and takes advantage of a unique opportunity to learn from the government's implementation of the program on a large...

We experimentally test the impact of expanding access to basic bank accounts in Uganda, Malawi, and Chile. Over two years, 17%, 10%, and 3% of treatment individuals made five or more deposits, respectively. Average monthly deposits for them were at the 79th, 91st, and 96th percentiles of...

We study the changes in economic behaviors of Amazon Mechanical Turk (MTurk) workers due to the COVID19 pandemic, and compare it to a pre-pandemic MTurker sample, a student sample, and a representative sample of the United States. We find that MTurkers during the pandemic behave differently than...

We present experimental evidence that enabling access to universal early child care for families with lower socioeconomic status (SES) increases maternal labor supply. Our intervention provides families with customized help for child care applications, resulting in a large increase in enrollment...

Background: Governments around the world use mobile vaccination units (MVUs) to increase COVID-19 vaccine uptake, but the causal effect of MVUs has not yet been evaluated.Methods: In a randomized controlled trial (RCT) with 20 Swiss communities (10 treatment and 10 control) in August 2021, we...

Background: Governments around the world use mobile vaccination units (MVUs) to increase COVID-19 vaccine uptake, but the causal effect of MVUs has not yet been evaluated.Methods: In a randomized controlled trial (RCT) with 20 Swiss communities (10 treatment and 10 control) in August 2021, we...

We present experimental evidence that enabling access to universal early child care for families with lower socioeconomic status (SES) increases maternal labor supply. Our intervention provides families with customized help for child care applications, resulting in a large increase in enrollment...

Using iterative experiments to uncover causal links between critical policy details and outcomes helps to optimize policy design. This paper studies a large-scale staged fiscal stimulus program conducted during the COVID-19 pandemic, in which a provincial government in China disbursed digital...

We present experimental evidence that enabling access to universal early child care for families with lower socioeconomic status (SES) increases maternal labor supply. Our intervention provides families with customized help for child care applications, resulting in a large increase in enrollment...