Aggregate and Regional Disagggregate Fluctuations (Now published in Empirical Economics (1996), vol.21, no.1, pp.137-159.)

This paper models fluctuations in regional disaggregates as a nonstationary, dynamically evolving distribution. Doing so enables study of the dynamics of aggregate fluctuations jointly with those of the rich cross-section of regional disaggregates. For the US, the leading state - regardless of which it happens to be - contains strong predictive power for aggregate fluctuations. This effect is difficult to understand if only aggregate disturbances affect aggregate business cycles through aggregate propagation mechanisms. Instead, the better picture might be one of a "wave" of regional dynamics, rippling across the national economy