This paper explores how efficiency promotes the use of structure in language. It starts from the premise that one of language's central characteristics is to provide a means for saying noval things about novel circumstances, its creativity. It is reasonable to expect that in a rich and changing...

This paper designs and implements a Bayesian dynamic latent factor model for a vector of data describing the Iowa economy.

In this paper, the conventional test of the Sharpe-Lintner version of the Capital Asset Pricing Model (CAPM) are reconsidered. The CAPM is formulated as a Seemingly Unrelated Regression (SUR) system with an adding-up restriction. A statistical framework for conducting the conventional tests is...

We develop a new test of a parametric model of a conditional mean function against a nonparametric alternative. The test adapts to the unknown smoothness of the alternative model and is uniformly consistent against alternatives whose distance from the parametric model converges to zero at the...