Book briefs

Food policy: Integrating supply, distribution and consumption, EDI series in economic development, John Hopkins University Press, Baltimore and London, 1987

Food poverty and consumption patterns in Kenya, International Labour Office, Geneva, 1986     

Optimal product variety in radio markets

A vast theoretical literature explores inefficient market structures in free‐entry equilibria, and previous empirical work demonstrated that excessive entry may obtain in local radio markets. We extend that literature by relaxing the assumption that stations are symmetric, allowing for endogenous horizontal and (unobserved) vertical station differentiation. We find that, in most broadcasting formats, a social planner who takes into account the welfare of market participants eliminates 50%–60% of the observed stations. In 80%–94.9% of markets where high‐quality stations are observed, welfare could be unambiguously improved by converting one such station into low‐quality broadcasting, suggesting local overprovision of quality.     

Assessing Conformity with Generally Accepted Accounting Principles Using Expert Accounting Witness Evidence and the Conceptual Framework

To enhance understanding of the status of the Financial Accounting Standards Board's Conceptual Framework for Financial Reporting, we analyse important rules of evidence in United States (US) courts regarding the presentation of expert accounting witness testimony. We draw on this analysis to recommend the relocation of the Conceptual Framework in the US Generally Accepted Accounting Principles (GAAP) hierarchy. For empirical support, we explore how rules of evidence in the criminal trial in 2006 of Enron's two most senior executives affected assessment of whether Enron's financial reports conformed with the FASB's GAAP. We recommend that the FASB's Conceptual Framework should be included in authoritative literature as the uppermost authority, and that it be grounded closely in user needs and the ethical principles associated with meeting those needs. Further, we recommend that accounting expert witnesses adopt an overriding concern for objectivity and impartiality in assisting courts to understand complex accounting matters within the Conceptual Framework.     

Low-latency trading

We define low-latency activity as strategies that respond to market events in the millisecond environment, the hallmark of proprietary trading by high-frequency traders though it could include other algorithmic activity as well. We propose a new measure of low-latency activity to investigate the impact of high-frequency trading on the market environment. Our measure is highly correlated with NASDAQ-constructed estimates of high-frequency trading, but it can be computed from widely-available message data. We use this measure to study how low-latency activity affects market quality both during normal market conditions and during a period of declining prices and heightened economic uncertainty. Our analysis suggests that increased low-latency activity improves traditional market quality measures—decreasing spreads, increasing displayed depth in the limit order book, and lowering short-term volatility. Our findings suggest that given the current market structure for U.S. equities, increased low-latency activity need not work to the detriment of long-term investors.     

Bond Immunization for Affine Term Structures

This paper generalizes a number of important immunization theorems. We show that the Fisher and Weil immunization, Bierwag and Khang minimax, Redington multiple liability, and Bierwag, Kaufman, and Toevs coverage theorems can be generalized to the class of affine term structures. This class of term structures contains many models that are commonly used in the finance literature.     

Adjusting Choice Models to Better Predict Market Behavior

The emergence of Bayesian methodology has facilitated respondent-level conjoint models, and deriving utilities from choice experiments has become very popular among those modeling product line decisions or new product introductions. This review begins with a paradox of why experimental choices should mirror market behavior despite clear differences in content, structure and motivation. It then addresses ways to design the choice tasks so that they are more likely to reflect market choices. Finally, it examines ways to model the results of the choice experiments to better mirror both underlying decision processes and potential market choices. Co-chairs. Author order is alphabetical.     

Financial Market Turmoil： Implications for Monetary Policy Transmission in China

The recent financial market turmoil has initiated another search for insightful understanding of the interactions between the financial market and monetary policy. This paper explores these interactions in terms of the transmission mechanism of monetary policy in China. We argue that evolving financial development, enhanced by the expansion of the financial market, has altered the conventional channel for monetary transmission in China. Analyzing marked changes in the financial landscape and taking into account policy regime shifts in China, the paper provides clear evidence showing that the financial market has become a new and important channel for transmission of monetary policy in China.     

Rational Strategic Reasoning: An Unnatural Act?

We review recent literature on competitive reactions and strategic thinking and offer several observations. Evidence is mounting that strategic thinking is an unnatural act, made difficult by natural individual biases and organizational roadblocks. In addition, it is possible that uncertainty about competitive behavior is caused by and contributes to informal and incomplete competitive intelligence. We propose a simple model which suggests a potential path dependency in a firm's intelligence gathering, driven by the inertia of its past decision-making. Such a path dependency can be broken, however, as evidenced by several examples of firms who have overcome barriers to strategic thinking in creative ways. Paradoxically, though, there are circumstances in which competition is overemphasized in decision-making. Research priorities are discussed.