State-space estimation of rational bubbles in the Yen/Deutsche Mark exchange rate

State-Space Estimation of Rational Bubbles in the Yen/Deutsche Mark Exchange Rate. — This paper considers a series that uncovered interest parity predicts to be white noise and inspects it for evidence of stochastic rational bubbles. State-space methods are used that specify a bubble component of the series as an unobserved state. The technique’s effectiveness is demonstrated by Monte Carlo experiments. One span of the series is found in which a stochastic rational bubble specification clearly dominates the white noise specification. It coincides with a period of general financial turm-oil in the associated economies, i.e. Japan and Germany during 1989 and early 1990.     

POLLUTION AND POLLUTION ABATEMENT IN THE NATIONAL ACCOUNTS

Building on the approach of Weitzman, as extended by Hartwick and Mäler, five models of national accounts in a dynamic competitive economy with pollution externalities are constructed: flow pollutants, stock pollutants, fossil fuels and CO₂, living resources and acid rain, and household defensive expenditures. The results measure welfare rather than national product per se . The general conclusions are that abatement expenditures should be treated as intermediate consumption, that adjustments need to be made for both pollution emissions and natural pollution dissipation processes, that marginal social costs should be used to value emissions, and that the level of environmental services must be valued in measuring welfare. Not only should household defensive expenditures not be subtracted from the welfare measure, under plausible assumptions the adjustment to welfare (as opposed to NNP) includes a value greater than the level of household defensive expenditure.     

Progress along the path: evolving issues in the measurement of genuine saving

More than 10 years since a practical linkage between sustainable development and a measure of national wealth—expanded to include natural and environmental resources—was first posited, the empirical estimation of adjusted net savings, dubbed ‘genuine’ saving, has evolved considerably. In this paper we take stock of both progress achieved and the challenges that remain. We begin by recalling the key points made in Pearce and Atkinson (1993, Ecol Econ 8, 103), which presented the first cross-country estimates of savings rates adjusted to reflect depletion and degradation of the environment. We then briefly summarise the evolution of the theoretical argument linking savings and sustainability. However, the main focus of this paper is an aspect that concerned David Pearce greatly, namely the evolution of the measurement of genuine savings. We identify and consider the empirical evidence with regard to two particular measurement issues: the valuation of exhaustible resources and environmental degradation. Common to the both issues are concerns about measuring changes in national wealth in real world economies.      

Genuine Savings Rates in Developing Countries

Augmented measures of savings and wealth in the national accountsare critical to conceptualizing and achieving sustainable development.After developing the theory of genuine savings—traditionalnet savings less the value of resource depletion and environmentaldegradation plus the value of investment in human capital—thisarticle presents empirical estimates for developing countries.These calculations account for resource depletion and carbondioxide emissions, using consistent time series data for 1970–93.The empirical evidence shows that levels of genuine savingsare negative in a wide range of countries, particularly in Sub-SaharanAfrica, and that these countries are being progressively impoverished.Increasing the coverage of natural resources and pollutantsin our calculations would reduce the estimated levels of genuinesavings overall. The use of genuine savings measures suggestsa series of policy questions that are key to sustaining development.These are also explored, specifically the extent to which monetaryand fiscal policies, exports of exhaustible resources, strongerresource policies, and pollution abatement measures boost genuinesavings rates. For policymakers, linking sustainable developmentto genuine savings rates means that there are many possibleinterventions to increase sustainability, from the macroeconomicto the purely environmental.     

Is Background Music Effective On Retail Websites?

Web designers often advise online retailers against incorporating background music on websites. However, the effect of music in brick-and-mortar retail settings has generally been found to be favorable. The research on the effects of music has been mixed. Our study aims to examine whether congruent music on the website homepage influences online consumers. Using the responses of 290 visitors to two different commercial websites, we test the influence of background music on consumers’ arousal and pleasure perceptions. The results indicate congruent background music on a website's homepage will generate positive affective responses of arousal and pleasure within users, and will enhance users’ perceived usefulness and perceived enjoyment as well. The findings reveal the effects of respondent’ affective responses to the music differed by gender. Website music produces significant affective and cognitive responses in high web skill/low web challenge users and explains more of website enjoyment.     

Making rights from what’s left of Darwinism

The legal, political, and social meaning of the work of Charles Darwin has been claimed as resident to conservative and liberal homes alike. Peter Singer's unique admixture of personal liberal politics and what may look to be an extremely conservative philosophy of nature expose some over-simplicity in traditional ‘right’ and ‘left’ categories. In “Recovering the Left from Darwin in the 21st Century”, Steve Fuller provides us with insightful historical and sociological contexts for Singer's challenges. In this article, Kirk Junker takes one aspect of the trajectory ‘the notion of natural rights’ and examines their social construction, linguistic maintenance, and legal ramifications.