We assigned two cohorts of kindergarten students, totaling more than 24,000 children, to teachers within schools with a rule that is as-good-as-random. We collected data on children at the beginning of the school year, and applied 12 tests of math, language and executive function (EF) at the end...

We assigned two cohorts of kindergarten students, totaling more than 24,000 children, to teachers within schools with a rule that is as-good-as-random. We collected data on children at the beginning of the school year, and applied 12 tests of math, language and executive function (EF) at the end...

Industry affiliation provides an important channel through which trade liberalization can affect worker earnings and wage inequality between skilled and unskilled workers. This empirical study of the impact of the 1988-94 trade liberalization in Brazil on the industry wage structure suggests...

The authors study the impact of the 1988-94 trade liberalization in Brazil on wage distribution. They explore three main channels through which trade liberalization could have affected wage distribution: (1) increasing returns to skilled workers because of Hecksher-Ohlin adjustments to trade...

Children in developing countries have deep deficits in math and language. Personalized coaching for teachers has been proposed as a way of raising teacher quality and child achievement. We designed a coaching program that focused on one aspect of teacher quality-teacher-child interactions - that...

We assigned two cohorts of kindergarten students, totaling more than 24,000 children, to teachers within schools with a rule that is as-good-as-random. We collected data on children at the beginning of the school year, and applied 12 tests of math, language and executive function (EF) at the end...