This paper presents a test for exogeneity of explanatory variables that minimizes the need for auxiliary assumptions that are not required by the definition of exogeneity. It concerns inference about a non-parametric function g that is identified by a conditional moment restriction involving...

We study the intergenerational effects of maternal education on children's cognitive achievement, behavioural problems, grade repetition and obesity. We address endogeneity of maternal schooling by instrumenting with variation in schooling costs when the mother grew up. Using matched data from...