"It is well known that augmenting a standard linear regression model with variables that are correlated with the error term but uncorrelated with the original regressors will increase asymptotic efficiency of the original coefficients. We argue that in the context of predicting excess returns,...

The proportion female in the economics profession in the U.S. has been low historically compared with other disciplines. Although the percentage of Ph.D. degrees awarded to women and the representation of women on faculties have increased over time, economics still lags many other fields....