Yield Spreads and Interest Rate Movements: A Bird's Eye View
NBER Working Paper No. 3153 (Also Reprint No. r1613)
The expectations theory of the term structure implies that the spread between a longer-term interest rate and a shorter-term interest rate forecasts two subsequent interest rate changes: the change in yield of the longer-term bond over the life of the shorter-term bond, and a weighted average of the changes in shorter-term rates over the life of the longer-term bond. For postwar U.S. data from Mcculloch  and just about any combination of maturities between one month and ten years we find that the former relation is not borne out by the data, the latter roughly is. When the yield spread is high the yield on the longer-term bond tends to fall, contrary to the expectations theory; at the same time, the shorter-term interest rate tends to rise, just as the expectations theory requires. We discuss several possible interpretations of these findings. We argue that they are consistent with a model in which the spread is a multiple of the value implied by the expectations theory. This model could be generated by time-varying risk premia which are correlated with expected increases in short-term interest rates, or by a failure of rational expectations in our sample period.
Document Object Identifier (DOI): 10.3386/w3153
Published: Review of Economic Studies, Vol. 58, pp. 495-514, (1991). citation courtesy of
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