An attractive theory of the term structure of interest rates is the expectations hypothesis, which holds that the long rate equals expected future short rates over the term of the bond. Many empirical studies, such as Shiller, Campbell, and Schoenholtz (1983), Fama (1984), Mankiw and Miron (1986), Fama and Bliss (1987), Mishkin (1988), Hardouvelis (1988), Froot (1989), Simon (1989, 1990), Cook and Hahn (1990), Campbell and Shiller (1991), and Roberds, Runkle and Whiteman (1996), find that the estimated coefficients in a regression of the change in the expected future short-term interest rates on the yield spread are significantly less than the value of unity predicted by the expectations hypothesis and differ as the forecast horizon varies. Even though Fama (1984), Mishkin (1988), Hardouvelis (1988), and Simon (1990) have found yield spreads do help predict future rates, the coefficient appears inconsistent with the expectations hypothesis.