This study aims to shed a light on children’s pragmatic development by examining Mandarin-speaking requests in interactions with their parents. It is found that children between 24 and 36 months old appear use various request forms, primarily simple imperatives WANT statements. A closer examination reveals prefer activity-based while both primary forms are unstructured daily conversations. The ...

Firms are more productive in larger cities. This paper investigates a potential explanation that was first proposed by Adam Smith: Larger cities facilitate greater division of labor within firms. Using a dataset of Brazilian firms, I first document that division of labor is indeed robustly correlated with city size, controlling for firm size. I propose a theoretical model in which this relation...