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Seasonal Fluctuations and the Life Cycle-Permanent Income Model of Consumption

Journal of Political Economy 1986 94(6), 1258-1279
This paper examines a new possible explanation for the recent rejections of the life cycle-permanent income model of consumption: the treatment of seasonal fluctuations. The paper shows that when the seasonal fluctuations in consumption purchases are included in an analysis of the life cycle-permanent income model, there is no evidence in the aggregate data against the model. The estimates of the parameters of agents' utility functions obtained with seasonally unadjusted data are plausible, and the unadjusted data do not reject the overidentifying restrictions on the model.

Seasonal Fluctuations and the Life Cycle-Permanent Income Model of Consumption

Journal of Political Economy 1986 94(6), 1258-1279
This paper examines a new possible explanation for the recent rejections of the life cycle-permanent income model of consumption: the treatment of seasonal fluctuations. The paper shows that when the seasonal fluctuations in consumption purchases are included in an analysis of the life cycle-permanent income model, there is no evidence in the aggregate data against the model. The estimates of the parameters of agents' utility functions obtained with seasonally unadjusted data are plausible, and the unadjusted data do not reject the overidentifying restrictions on the model.

The Changing Behavior of the Term Structure of Interest Rates

Quarterly Journal of Economics 1986 101(2), 211 open access
We reexamine the expectations theory of the term structure using data at the short end of the maturity spectrum. We find that prior to the founding of the Federal Reserve System in 1915, the spread between long rates and short rates has substantial predictive power for the path of interest rates; after 1915, however, the spread contains much less predictive power. We then show that the short rate is approximately a random walk after the founding of the Fed but not before. This latter fact, coupled with even slight variation in the term premium, can explain the observed change in 1915 in the performance of the expectations theory. We suggest that the random walk character of the short rate may be attributable to the Federal Reserve's commitment to stabilizing interest rates.