In an environment where children's time has an economic value and employment opportunities for educated workers are scarce, parental investments in their children's education may not be driven entirely by poverty and credit constraints. We offer evidence that children's participation in child...

Human capital plays an important role in the theory of economic growth, but it has been difficult to measure this abstract concept. We survey the psychological literature on cross-cultural IQ tests, and conclude that modern intelligence tests are well-suited for measuring an important form of a...