We develop a model for decomposing the covariance structure of panel data on firms into a part due to permanent heterogeneity, a part due to differential histories with unknown ages, and a part due to the evolution of economic shocks to the firm. Our model allows for the endogenous death of...

Key macro indicators such as output, productivity, and inflation are based on a complex system across multiple statistical agencies using different samples and different levels of aggregation. The Census Bureau collects nominal sales, the Bureau of Labor Statistics collects prices, and the...

Mankiw [1982] explores the Permanent Income Hypothesis implication that durable expenditures follow an ARMA(1,1) representation. He finds that durable expenditures are represented by an AR(1) process which implies that the rate of depreciation of durables, under the PIH model, is 100%. This...

In 1997, France T‚l‚com, the state-owned French telephone company, went through a partial privatization. The government offered current and prior France T‚l‚com employees the opportunity to buy portfolios of shares with various combinations of discounts, required holding periods,...

In the twenty-first century many of the professional and high ranking managerial workers in the United States and in other OECD countries will be women. This change in women's social and economic status represents a dramatic break with the past, but one that can only be understood by looking to...

Our two related goals in this paper are the following: Firstly and mainly, we want to examine the effects of major changes in modelling strategy and econometric methodology, over the past twenty years, on estimation of firm-level investment equations using panel data. Secondly, we try to assess...