We show that uncertainty about parameters of the short rate model can account for the rejections of the expectations hypothesis for the term structure of interest rates. We assume that agents employ Bayes rule to learn parameter values in the context of a model that is subject to stochastic...

It has been hypothesized that momentum might be rationally explained as a consequence of the cross-sectional variation of unconditional expected returns. Stocks with relatively high unconditional expected returns will on average outperform in both the portfolio formation period and in the...

Empirical rejections of the rational expectations hypothesis (REH) in the bond market have attracted much attention. In this paper we demonstrate that if agents have information about next period's short yield in addition to that contained in the current short yield, a small sample bias arises...