Speculative Growth

We propose a framework for understanding recurrent historical episodes of vigorous economic expansion accompanied by extreme asset valuations, as exhibited by Japan in the 1980's and the U.S. in the 1990's. We interpret this phenomenon as a high-valuation equilibrium with a low effective cost of capital based on optimism about the future availability of funds for investment. The key to the sustainability of such equilibrium is feedback from increased growth to an increase in the supply of funding. We show that such feedback arises naturally when the expansion is concentrated in a new economy' sector and when it is supported by sustained financial surpluses-both of which would constitute an integral part, as cause and consequence, of a speculative growth' equilibrium. The high-valuation equilibrium we analyze may take the form of a stock market bubble. In contrast to classic bubbles on non-productive assets, the bubbles in our model encourage real investments, boost long run savings, and may appear in dynamically efficient economies.

On the Timing and Efficiency of Creative Destruction

This paper analyzes the timing, pace and efficiency of the on- going job reallocation that results from product and process innovation. There are strong reasons why an efficient economy ought to concentrate both job creation and destruction during cyclical downturns, when the opportunity cost of reallocation is lowest. Malfunctioning labor markets can disrupt this synchronized pattern and decouple creation and destruction. Moreover, irrespective of whether workers are too strong or too weak, labor market inefficiencies generally lead to technological 'sclerosis,' characterized by excessively slow renovation. Government incentives to production may alleviate high unemployment in this economy, but at the cost of exacerbating sclerosis. Creation incentives, on the contrary, increase the pace of reallocation. We show how an optimal combination of both types of policies can restore economic efficiency.

The Cost of Recessions Revisited: A Reverse-Liquidationist View

The observation that liquidations are concentrated in recessions has long been the subject of controversy. One view holds that liquidations are beneficial in that they result in increased restructuring. Another view holds that liquidations are privately inefficient and essentially wasteful. This paper proposes an alternative perspective. Based on a combination of theory and empirical evidence on gross job flows and on financial and labor market rents, we find that, cumulatively, recessions result in reduced restructuring, and that this is likely to be socially costly once we consider inefficiencies on both the creation and destruction margins.

Creative Destruction and Development: Institutions, Crises, and Restructuring

There is increasing empirical evidence that creative destruction, driven by experimentation and the adoption of new products and processes when investment is sunk, is a core mechanism of development. Obstacles to this process are likely to be obstacles to the progress in standards of living. Generically, underdeveloped and politicized institutions are a major impediment to a well-functioning creative destruction process, and result in sluggish creation, technological sclerosis,' and spurious reallocation. Those ills reflect the macroeconomic consequences of contracting failures in the presence of sunk investments. Recurrent crises are another major obstacle to creative destruction. The common inference that increased liquidations during crises result in increased restructuring is unwarranted. Indications are, to the contrary, that crises freeze the restructuring process and that this is associated with the tight financial-market conditions that follow. This productivity cost of recessions adds to the traditional costs of resource under-utilization.

Speculative Growth: Hints from the US Economy

We propose a framework for understanding recurrent historical episodes of vigorous economic expansion accompanied by extreme asset valuations, as exhibited by the U.S. in the 1990s. We interpret this phenomenon as a high-valuation equilibrium with a low effective cost of capital based on optimism about the future availability of funds for investment. The key to the sustainability of such an equilibrium is feedback from increased growth to an increase in the supply of effective funding. We show that such feedback arises naturally when an expansion comes with technological progress in the capital producing sector, when fiscal rules generate sustained fiscal surpluses, when the rest of the world has lower expansion potential, and when financial constraints are relaxed by the expansion itself. Arguably, these ingredients were all simultaneously present in the U.S. during the 1990s. We also show that such expansions can be welfare improving but they can crash. The latter is more likely if bubbles develop along the expansionary path. These (rational) bubbles can emerge even when the interest rate exceeds the rate of growth of the economy.

On the Ills of Adjustment

We analyze market impediments to the process of structural adjustment. We focus on incomplete-contract inefficiencies in the transactions between workers and firms that render the quasi-rents from 'specific' investment appropriable. During adjustment, the result is a depressed rate of creation of the new productive structure and excessive destruction of the old one, leading to an employment crisis. Moreover, appropriability weakens the incentives for extensive restructuring and results in a 'sclerotic' productive structure. An adequate managed- adjustment program combines vigorous creation incentives in the expanding sector with measures to support employment in the contracting one. In contrast, the common prescription of gradualism does not act as an effective 'synchronizer' of creation and destruction, for it can only reduce destruction by also reducing an already depressed creation rate.

Endogenous business cycles : some theory and evidence

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Economics, 1989.Includes bibliographical references.by Mohamad Lutfi Hammour.Ph.D

Speculative growth

November 27, 200

Speculative growth : hints from the US economy

Original date of pub.: November 27, 200

Jobless Growth: Appropriability, Factor Substitution, and Unemployment

A central determinant of the political economy of capital-labor relations is the appropriability of specific quasi-rents. " This paper is concerned with the general-equilibrium interaction of appropriability and characteristics of technology namely, the embodiment of technology in capital and capital-labor substitutability in the technological menu. Technological embodiment means that the supply of capital is effectively much less elastic in the short than in the long run, and is therefore more exposed to appropriability; technology choice implies that an attempt at appropriating capital will induce a substitution away from labor in the long run, and constitutes a mechanism to thwart appropriation. Shifts in European labor relations in the last three decades offer a good laboratory to explore the empirical relevance of those mechanisms. The evolution of the labor share, the profit rate, the capital/output ratio, and unemployment which we examine more particularly in the case of France appears highly supportive.