The evolution of competition in U.S. manufacturing

Although four-digit concentration ratios remained roughly constant in the quarter century between 1958 and 1982, they declined significantly when adjusted for imports. The empirical analysis in this paper shows that changes in both types of four-digit concentration ratios were related to the initial level of industrial concentration, barriers to entry, market growth, and to a set of adjustment variables reflecting an interaction of imports and particular structural aspects of the industry. Speculations about the future of competition in the United States are based on the regression equations explaining changes in concentration.I would like to thank John Caskey, Ellen Magenheim, Lee Perlman, Zora Pryor, F. M. Scherer, and participants of the Swarthmore Economics Department's Summer Brown Bag Lunch for comments on an earlier draft. I am also grateful to Chang-Tai Hsieh, who served as a research assistant in the initial stages of research, to the Swarthmore College Faculty Research Fund for financing, to the Brookings Institution where this essay was completed, and to Richard Caves and Lawrence Katz for supplying data classified by four-digit industries to me. Of course, only I am responsible for my conclusions and errors.     

The Research Assessment Exercise, the state and the dominance of mainstream economics in British universities

In previous research on the impact of the Research AssessmentExercise on heterodox economics and heterodox economists inthe UK, the author concluded that reliance on Diamond List journalsto rank departments would drive economic departments to discriminatepositively in terms of their hiring, promotion and researchstrategies in favour of mainstream economists and their research,in order to maintain or improve their ranking. As a consequence,the author predicted there would be no or only a token presenceof heterodox economists in an increasing number of departments.Whether the conclusions still hold and the predictions materialiseis the subject of the paper.     

Atoms,Bits, and Wits: A New Economics for the Twenty-First Century—Part II

Learning also affects the organization of economic activity as a “force locomotif” of growth. Bounded rationality opens a theory of planning horizons as an ordinal measure of wits. The realm of wits shines a novel light on the nature of interdependence, since the balance of substitution and complementarity is horizonal: longer and broader horizons shift this balance away from substitution in favor of complementarity, augmenting concerts of interest over conflicts in social relations. Atoms, bits, and wits are modeled to show why substitution only applies to short-run atoms; a case for complementarity rises from both increasing returns and bits, where wits strengthen the case for cooperation as efficient. With complementarity, competition—not collusion—stifles output. The social and institutional implications of this are addressed theoretically in this paper.     

货币政策方略：来自金融危机的教训

直至2007年8月．货币经济学理论和实证研究上的进展已经使经济学家和政策制定者认定当前存在着一门明晰的“货币政策科学”。中央银行就货币政策方略的绝大部分要素达成了一致,同时货币政策被认为在OECD国家取得了巨大成功：后者不仅保持着低通膨,而且通胀波动率也很低。此外,这些国家的产出波动率也下降了,而自20世纪80年代初以来的时期更被冠以“大缓和（Great Moderation）”的称号。货币经济学家和中央银行家都自我感觉相当良好。     

A Survey of the Economic Systems of Wild Chimpanzees and Baboons

This article reviews neoclassical, environmentalist, and institutionalist perspectives on the emerging institutional adjustments commonly referred to as water trading or water marketing. Although a holistic analysis of these emerging institutional reforms would be far more comprehensive and detailed, this article seeks only to provide an institutionalist perspective that may benefit more comprehensive research. As such, analysis of new sources of water supply, of specific water conservation measures, and of attitudes regarding water are largely neglected. Water trading is merely assessed in the context of the evolving legal structure and the existing, limited water supply in the American West, particularly California. The conclusion is that water trading, if properly administered, can generally benefit involved parties without widespread social costs and without jeopardizing social control.     

From post-Keynesian to historical price theory,part I: facts,theory and empirically grounded pricing model ∗

The paper develops an empirically grounded pricing model by first examining the business enterprise pricing equation and its empirical features, and then secondly examining the empirical properties of the prices set by the pricing equations. The third part of the paper is devoted to laying out the empirically grounded pricing model and then delineating its empirical and theoretical properties. The paper concludes that, since the pricing model is embedded in an empirical, historical context, it provides the basis for developing a historical theory of prices.     

The Impact on Interest Rates of Unemployment Announcements and Their Revisions

The announced changes in monthly employment reports and in weekly new unemployment claim reports are based on new levels and on revisions to previous levels. We analyze the effect on interest rates of surprises to these two separate components of the changes. We find that for weekly reports the effect on interest rates of the new level is greater than the effect of the revisions. For monthly employment reports, the two components’ effects have similar strength.     

A study of e‐retailing management: analysing the expectations and perceptions of Spanish consumers

This article analyses various elements that influence the purchasing behaviour of online consumers. These elements include the aesthetic aspects of a web site and the interactive processes that take place at the time of purchase. The study analyses the expectations and perceptions of a sample of Spanish online customers. On the basis of these attitudes, the sample of respondents is segmented. In addition, the main factors that determine online service satisfaction are identified. The segments of respondents are then positioned with respect to these identified factors in online service quality. The analysis thus allows differentiation of both customers and service quality. The paper concludes with recommendations for online retailers who wish to operate a successful ‘virtual’ retail outlet.