Combining Sources of Preference Data for Modeling Complex Decision Processes

We review current state-of-the-art practices for combining preference data from multiple sources and discuss future research possibilities. A central theme is that any one data source (e.g., a scanner panel source) is often insufficient to support tests of complex theories of choice and decision making. Hence, analysts may need to embrace a wider variety of data types and measurement tools than traditionally have been considered in applied decision making and choice research. We discuss the viability of preference-stationarity assumptions usually made when pooling data, as well as random-utility theory-based approaches for combining data sources. We also discuss types of models and data sources likely to be required to make inferences about and estimate models that describe choice dynamics. The latter discussion is speculative insofar as the body of literature on this topic is small.     

A reappraisal of the forecasting performance of corn and soybean new crop futures

Forecasting performance of December corn and November soybean futures contracts during the previous spring was evaluated using the commonly specified price-level and percent-change models. These models invoke different assumptions regarding stationarity. Using Stein's analytical framework, results for the price-level model suggest avoidable social loss existed in the soybean market since 1973, because November futures provided biased forecasts. Regression R²s for both corn and soybeans declined substantially between 1952–1972 and 1973–1997, suggesting total social loss increased. By contrast, results from the percent-change model suggest only unavoidable social loss existed in the corn and soybean markets, because the futures provided unbiased forecasts. R² increased for corn but declined for soybeans, suggesting unavoidable social loss declined for corn, but increased for soybeans. The important, conflicting nature of the results from the two models underscores the importance of examining alternative model specifications when evaluating price forecasting performance. © 1999 John Wiley & Sons, Inc. Jrl Fut Mark 19: 604–618, 1999     

The optimal tax on antebellum US cotton exports

The US produced about 80% of the world’s cotton in the decades prior to the Civil War. How much monopoly power did the US possess in the world cotton market and what would have been the effect of an optimal export tax? This paper estimates the elasticity of foreign demand for US cotton exports and uses the elasticity in a simple partial equilibrium model to calculate the optimal export tax and its effect on prices, trade, and welfare. The results indicate that the export demand elasticity for US cotton was about −1.7 and that the optimal export tax of about 50% would have raised US welfare by about $10 million, about 0.3% of US GDP or about 1% of the South’s GDP.     

An empirical examination of the implications of arbitrage pricing theory

This paper presents a comprehensive set of tests of the implications of the Arbitrage Pricing Theory. We find, unlike previously reported results, a very limited relationship between the expected returns and the covariance (factor loadings) measures of risk. Furthermore, unique variance measures of risk, while generally making only small contributions to the explanation of asset returns, turn out to be significant about as frequently as the coveriance measures of risk — which is inconsistent with the Arbitrage Pricing Theory model. The intercept tests are more mixed but provide only limited support to the model.     

Regulatory science-Towards a sociological framework

The close relationship between scientific expertise and regulatory policy in certain controversial and public areas has prompted commentators to suggest the concept of ‘regulatory science’. However, definition is generally constrained either to the concerns of regulatory science or to its context. This paper proposes an approach to regulatory science which is both empirically-based and allows a more theoretical treatment of the new conditions of scientific and regulatory activity. A particular case-study of the British agrochemicals sector is presented in terms of a five-way analytical framework for regulatory science. The paper concludes by considering the wider relevance of regulatory science for future sociological and policy research.     

RENT SEEKING AND SOCIAL INVESTMENT IN TASTE CHANGE*

We study the social allocation of resources to the alteration of preferences. Such taste changes are Pareto-preferred if, according to both the original and the new taste regime, the resource allocation resulting from the taste change constitutes an improvement. According to this criterion, a degree of altruism is in general Pareto-preferred, because it reduces socially wasteful activities, such as lobbying, bargaining and other rent seeking activities designed to increase one agent's expected share of the contested rent. We present a stylized model that captures the role of education in generating altruism and thus reducing the expenditure on rent seeking.     

Markets without boundaries

Western economies, and the US in particular, are experiencing a dramatic diversification and proliferation of information activities which will effect all aspects of leisure and business. Against this background, Manley Irwin considers the nature of market entry, the reasons why markets are changing so rapidly, and the implications for both public and private sectors. He concludes that the blurring of market boundaries will defuse and decentralize economies, spur competition and encourage entrepreneurial activity.     

The Rise of US Anti‐dumping Activity in Historical Perspective

Empirical studies of anti‐dumping activity focus almost exclusively on the period since 1980. This paper puts recent US anti‐dumping experience in historical context by studying the determinants of annual case filings over the past half century. The conventional view that few anti‐dumping cases existed prior to 1980 is not correct, although most did not result in the imposition of duties. The increased number of cases in recent decades largely reflects petitions that target multiple‐source countries; the number of imported products involved has actually fallen since the mid‐1980s. The annual number of anti‐dumping cases is influenced by the unemployment rate, the exchange rate, import penetration (closely related to the decline in average tariffs), and changes in the anti‐dumping law and its enforcement in the early 1980s.