How much do schools differ in their effectiveness? Recent studies that seek to answer this question account for student sorting using random assignment generated by central allocation mechanisms or oversubscribed schools. However, the resulting estimates, while causal, may also reflect peer...

Imported digital goods are critical for productivity growth in low-income countries. Using detailed data on international trade flows and tariffs, this paper finds that African nations tend to import relatively low quality, low price digital goods. It also finds that digital goods in Africa are...

This study analyzes mobility patterns during the COVID-19 pandemic for 8 large Latin American cities. Indicators of mobility by socioeconomic status (SES) are generated by combining geo-referenced mobile phone information with granular census data. Before the pandemic, a strong positive...

This study analyzes mobility patterns during the COVID-19 pandemic for eight large Latin American cities. Indicators of mobility by socioeconomic status (SES) are generated by combining georeferenced mobile phone information with granular census data. Before the pandemic, a strong positive...

This study examines the impact on human mobility of the national social distancing policies implemented in 18 Latin American and Caribbean countries in March 2020. To do so, it uses georeferenced data from cellular phones and variation between countries with regard to whether these measures were...

This study examines the impact on human mobility of the national social distancing policies implemented in 18 Latin American and Caribbean countries in March 2020. To do so, it uses georeferenced data from cellular phones and variation between countries with regard to whether these measures were...

This paper examines a large-scale randomized evaluation of the One Laptop Per Child (OLPC) program in 531 rural primary schools, as implemented by the Peruvian government starting in 2009. We use administrative and survey data on academic achievement and grade progression through 2019 to...

We examine whether highlighting streaks encourages 4th to 6th grade students in Peru to increase their use of an online math platform and improve learning. Sixty thousand students were randomly assigned to receive messages that i) highlighted streaks, ii) provided personalized reminders with...

This study examines the impact on human mobility of social distancing policies implemented in 18 Latin American and Caribbean countries in March 2020. We use cell phone data and variation across countries regarding the adoption of these policies and their timing to estimate effects on the...

This paper uncovers new stylized facts on the emergence and diffusion of green technologies across countries, sectors, and firms. It draws on the textual analysis of patents and corporate earnings calls matched with multi-country, firm-level panel data for 2012-2021. The paper documents the...