The article focuses on the conditional relationship between various human capital proxies and the size of potential “O-Ring” or “Cobb-Douglas” sectors. We find that that years of schooling are a robust negative predictor of the size of the informal sector, conditioned on national average...

Using a data set for all sumo wrestlers in the post-World War II period, this paper investigates how wrestlers’ body mass index (BMI) is associated with wrestlers’ winning rate and absence rate. Further, the effect of BMI is compared between an early period (before the emergence of foreign...