Ever since Nelson and Plosser (1982) found evidence in favor of the unit-root hypothesis for 13 long-term annual macro series, observed unit - root behavior has been equated with persistence in the economy. Perron (1989) questioned this interpretation, arguing instead that the "observed"...

This paper develops an aggregation procedure using time-varying weights for constructing the common component of international economic fluctuations. The methodology for deriving time-varying weights is based on some stylized features of the data documented in the paper. The model allows for a...

Recent policy has focused on alleviating poverty among the elderly, with varying degrees of success. Gains to some subsets of the elderly population have come at the expense of others. A component of the policy debate has been identifying factors which might influence labor force participation...