Food Stamps and Food Spending: An Engel Function Approach

Estimation of Food Stamp Program (FSP) effects has been complicated by self-selection and by a contradiction between observed spending patterns and the economic theory of consumer choice. We developed a modified version of the traditional theory, in which participant households may be partly extramarginal even if they have some cash spending on at-home food. Using Current Population Survey (CPS) data for 2001–2005, we estimated Engel functions for at-home and away-from-home food spending for FSP participants and nonparticipants. Compared to nonparticipants with the same level of total income, participants had higher at-home food spending and lower away-from-home food spending.     

The Accounting Profession: Substantive Change and/or Image Management

The accounting profession’s image and reputation is built upon the members of the profession acting with the “highest sense of integrity” in “the public interest” (AICPA, 2003, www.aicpa.org/about). The Enron debacle initiated the latest crisis facing the profession regarding its image and reputation. The American Institute of Certified Public Accountants (AICPA) is the largest professional body representing the accounting profession and the one to which regulators have looked in establishing and upholding professional standards relating to the public practice of accounting and auditing. One of the AICPA’s responsibilities is to “promote public awareness and confidence in the integrity, objectivity, competence and professionalism of CPAs ....” (AICPA, 2003, www.aicpa.org/about). We analyze the public statements issued by the AICPA (i.e., press releases, speeches of officers, testimony, published articles) during this ethical and identity crisis beginning with the AICPA’s first public statement on the Enron debacle (AIPCA 2001) and concluding with the AICPA recognizing the need for a “new accounting culture” (Melancon 2002). In order to better understand the public discourse, we use image restoration theory (Benoit, 1995), because it provides a typology of strategies for dealing with the public face of crises. We identify the three most common strategies the AICPA employs during this period. Proposals for taking corrective action represent the most commonly employed strategy, but the analysis also indicates an attempt to evade responsibility by claiming defeasibility and to reduce the offensiveness of the situation by employing a bolstering strategy. A second analysis using DICTION, a software package useful in revealing latent dimensions in a text, indicates that early statements tend to use language related to accomplishing specific action while the later statements tend more toward general language that relates to peoples’ everyday lives. The findings raise questions as to substantive nature of the changes proposed by the AICPA, and thus, the extent to which the public interest is being served by them.     

National Judicial Power and the Dormant Commerce Clause

We develop a game in which a court monitors states as they regulatetrade among themselves. Contrary to commentators who see SupremeCourt oversight of state burdens on interstate commerce as theproduct of a powerfully ascendant court, we argue that the "dormantCommerce Clause" (DCC) originates as the strategic product ofan institutionally weak court. We provide three lines of argument.First, we refute the notion that merely observing the courtruling against state governments and those governments complyingwith its ruling is evidence of judicial power. Second, we showthat the equilibria of our "weak court" model directly impliesthe doctrinal contours of the DCC while the ascendancy hypothesisdoes not. Finally, we provide evidence that the court announceda weaker version of the DCC doctrine than sincerely preferredby pivotal justices on the court. Our arguments invite a revisedunderstanding of the role of the court in the development ofthe American political system.     

Classical and technological convergence: beyond the Solow-Swan growth model

Recent investigations into cross-country convergence followMankiw, Romer, and Weil (1992) in using a log-linear approximationto the Swan-Solow growth model to specify regressions. Thesestudies tend to assume a common and exogenous technology. Incontrast, the technology catch-up literature endogenises thegrowth of technology. The use of capital stock data rendersthe approximations and over-identification of the Mankiw modelunnecessary and enables us, using dynamic panel estimation,to estimate the separate contributions of diminishing returnsand technology transfer to the rate of conditional convergence.We find that both effects are important.     

Innovation and the Survival of New Firms in the UK

This paper analyzes the survival over the subsequent 5-year period of the complete cohort of nearly 162,000 limited companies that incorporated in Britain in 2001. The paper focuses on the relationship between innovation and survival at the firm-level. The data available allow us to look at the intellectual property (IP) activity of all British firms, including that of the cohort of new firms in 2001. The results indicate that IP activity, measured as patenting and trade-marking, is associated with a considerably lower probability of exit. We also find substantial differences in survival probabilities across sectors. In some sectors patenting is associated with a lower probability of exit; however, trade-marking is associated with lower probability in almost all sectors.     

Portfolio turnpikes

Profolio turnpike theorems show that if preferences at largewealth levels are similar to power utility, then the investmentstrategy converges to the power utility strategy as the horizonincreases. We state and prove two simple and general portfolioturnpike theorems. Unlike existing literature, our main resultdoes not assume independence of returns and depends only ondiscounting of future cash flows. We also provide a critiqueof portfolio turnpike results, based on the observations that(1) the time required for convergence is often too large tobe relevant, and (2) there is no convergence for consumptionwithdrawal problems.     

The economics of advertising: Where's the data?

Economists accept the importance of advertising to firm rivalry and economic performance, but data limitations have frustrated empirical research. This paper addresses that frustration and compares sources of advertising data. The paper concludes that data provided by a private vendor on measured-media consumer advertising represents the best choice, but involves substantial effort to link it to the Census industrial classification system. The authors do this for 284 manufacturing industries for Census years 1967 and 1982. Comparisons of industry advertising levels and advertising-to-sales ratios are given. Relative advertising levels and intensities have remained remarkably stable over the 15 year period.