Knowledge that Transforms

Monopolistic competition models have frequently been applied in macroeconomics, growth and development, and international and interregional economics. The three features of monopolistic competition, the monopoly power of producers, the lack of strategic interaction, and endogenous product variety, make it a useful framework to examine the aggregate implications of imperfect competition, increasing returns and incomplete markets. This papers presents a highly selective review in this area, with special emphasis on complementarity and its role in generating multiplier processes, business cycles, clustering, underdevelopment traps, regional disparities, and sustainable growth, or more generally, what Myrdal (1957) called the principle of circular and cumulative causation. (This abstract was borrowed from another version of this item.)

In this survey, we review the recent theoretical and empirical literature on household saving and consumption. The discussion is structured around a list of motives for saving and how well the standard theory captures these motives. We show that almost all of the motives for saving that have been suggested in the informal saving literature can be captured in the standard optimizing model. Particular attention is given to recent work on the precautionary motive and its implications for saving and consumption behavior. We also discuss the "behavioral" or "psychological" approach that eschews the use of standard optimization techniques and focuses instead on direct consideration on saving. We provide a section on facts: who save and how much. We then discuss informally the recent decline in the U.S. saving rate and whether the theory is of much use in understanding this and other changes in aggregate saving rates over time. We do not find any convincing explanation for the change in saving rates. We also discuss some analyses of saving behavior over the life-cycle, addressing such questions as whether households save "enough" for retirement and whether the consumption patterns of older households can be rationalized within a simple life cycle model. We also review a great number of studies of the consumption Euler equations. Based on our analysis of the studies cited we conclude that there is still mixed evidence that consumption is excessively sensitive to income. We also examine in depth the recent empirical literature on the precautionary motive. We conclude that although some households do seem to have a significant precautionary motive at some points in their life cycle, this motive is not so strong empirically as some investigators suggest.

Professional team sports leagues provide insight into the problems facing the management of functioning cartels. This paper provides an analysis of the incentives and outcomes inherent in the management of professional team sports cartels. Except for revenue sharing and salary caps, league cartel management outcomes are consistent with league-wide revenue maximization and have no impact on competitive balance. However, there are predictable impacts on the profitability of strong- and weak-drawing teams within the league. While providing an analytical review of the literature, the work here also yields new results concerning salary caps, local TV revenue sharing, and the behavior of cartel managers in the face of rival leagues.

Research on the standard of living now emphasizes alternatives or supplements to the national income accounts. This paper reviews the results of two decades of research using stature as a measure of health aspects of human welfare. After comparing and contrasting stature with per capita income, I consider height patterns discovered by economic historians that challenge traditional beliefs about the past, including long-term trends, cycles in heights, and the dreadfully small stature of slave children that was followed by catch-up growth. The paper concludes with comparisons to work in development economics and suggestions for research.

We review and critique the empirical literature on the links between investments in children and children's attainments. The primary theoretical perspectives that dominate this literature form the framework for our review. The potential effects on children of family choices and neighborhood characteristics are emphasized. The outcomes of interest include educational attainment, fertility choices, and work-related outcomes such as earnings and welfare recipiency. A set of tables provides details on the existing empirical literature. The focus is on the economics literature, but relevant studies from other social sciences are included as well.

The relationship between economic development and health has received far less attention than the relationship between development and schooling. However, recent studies indicate that better health is associated with improved labor market outcomes, particularly in low-income settings. Difficulties in disentangling the causal mechanisms underlying these associations are discussed, highlighting the role of behaviors and measurement of health. The empirical literature is reviewed, and implications of results for the functioning of markets are drawn out. The discussion includes an evaluation of the empirical evidence in support of the nutrition (health) efficiency wage hypothesis: we conclude that it is thin.

This survey assesses evidence on the linkage between environmental regulation and competitiveness, and finds little support for the conventional wisdom that environmental regulations have large adverse effects on competitiveness. Studies examining the effects of environmental regulations on net exports, overall trade flows, and plant-location decisions have produced estimates that are small, statistically insignificant, or not robust. We also find no systematic evidence supporting the revisionist hypothesis that environmental regulations stimulate innovation and improved competitiveness. Overall, the evidence suggests that the truth regarding the relationship between environmental protection and international competitiveness lies in between the extremes of the current debate.