The increasing waves of globalization, the first taking place between the second half of the last century and WWI, and the second which has occurred since WWII until today, implied an unprecedented flow of goods and factors across international borders. The first episode of mass migration dates...

This paper starts from a review of RCT studies in development economics, and documents many studies largely ignore attrition once attrition rates are found balanced between treatment arms. The paper analyzes the implications of attrition for the internal and external validity of the results of a...

This paper starts from a review of RCT studies in development economics, and documents many studies largely ignore attrition once attrition rates are found balanced between treatment arms. The paper analyzes the implications of attrition for the internal and external validity of the results of a...