The standard model of optimal growth, interpreted as a model of a market economy with infinitely long-lived agents, does not allow separation of the savings decisions of agents from the investment decisions of firms. Investment is essentially passive: the "one good" assumption leads to a...

This paper derives closed-form solutions for the investment and market value, under uncertainty, of competitive firms with constant returns to scale production and convex costs of adjustment. Solutions are derived for the case of irreversible investment as well as for reversible investment....

This paper analyzes an important class of models in which expectations play an important role. Topics included in the analysis are tests of: (1) rationality of forecasts in either market or survey data, (2) capital market efficiency, (3) the short-run neutrality of monetary policy and, (4)...

I examine optimal taxes in an overlapping generations economy in which each consumer's utility depends on consumption relative to the average level of consumption in the economy (the benchmark level of consumption) as well as on the level of the consumer's own consumption. The socially optimal...

Research on capital formation has long been a major focus of studies sponsored by the National Bureau of Economic Research because of the crucial role of capital accumulation in the process of economic growth. The papers in this volume examine the influence of taxes on capital formation, with...