With few exceptions, empirical household production studies ignore unobserved inputs. We demonstrate that without additional assumptions, the estimable impacts of the observed inputs cannot provide informative estimates of their marginal products due to contaminating variation in unobserved...

Does China’s quest for oil raise tensions with the United States? This paper examines the effect of international relations on global oil trade patterns. Using voting records for the United Nations General Assembly to measure the state of international relations, we estimate a modified gravity...