THE IMPACT OF GOVERNMENT EXPENDITURE ON GROWTH: EMPIRICAL EVIDENCE FROM A HETEROGENEOUS PANEL

This paper investigates the impact of government expenditure on growth, in a heterogeneous panel, for a sample of developing countries. Using generalized method of moments techniques, we show that countries with substantial government current expenditure have strong growth effects, which vary considerably across the nations.     

THE SYSTEMATIC RISK OF DEBT: AUSTRALIAN EVIDENCE*

This paper examines systematic risk (betas) of Australian government debt securities for the period 1979–2004 and makes three contributions to academic research and practical debate. First, the empirical work provides direct evidence on the systematic risk of government debt, and provides a benchmark for estimating the systematic risk of corporate debt which is relevant for cost of capital estimation and for optimal portfolio selection by asset managers such as superannuation funds. Second, analysis of reasons for non‐zero (and time varying) betas for fixed income securities aids understanding of the primary sources of systematic risk. Third, the results cast light on the appropriate choice of maturity of risk free interest rate for use in the Capital Asset Pricing Model and have implications for the current applicability of historical estimates of the market risk premium. Debt betas are found to be, on average, significantly positive and (as expected) closely related, cross sectionally, to duration. They are, however, subject to significant time series variation, and over the past few years the pre‐existing positive correlation between bond and stock returns appears to have vanished.     

THE IMPACT OF BESTSELLER RANK ON DEMAND: EVIDENCE FROM THE APP MARKET*

This article uses daily data on the ranking by sales of the top 100 apps sold through Apple’s App Store to provide evidence of the causal impact of today’s bestseller rank information on tomorrow’s demand. The estimates indicate that the willingness to pay of consumers is about $4.50 greater for a top ranked app than for the same unranked app. The results also indicate that the effects of bestseller status on willingness to pay decline steeply with rank at the top ranks, but remain economically significant for the apps in the first half of the top 100 list.     

THE IMPACT OF FOREIGN OWNERSHIP AND EFFICIENCY ON POLLUTION ABATEMENT EXPENDITURE BY CHEMICAL PLANTS: SOME UK EVIDENCE

This paper examines the impact of foreign ownership and efficiency on chemical plants' pollution abatement expenditure. The model estimates presented reveal not only which factors are the key determinants of whether any abatement expenditure occurs but also explain how much was spent on the principal categories of pollution control. These chemical plant results present a conspicuous contrast with earlier results based on other industrial sectors. This would suggest that the efficiency–pollution spending relationship is also characterised by industry specific effects.     

THE WESTERN AUSTRALIAN POWER DILEMMA*

From 1984 gas‐fired power generation had been gradually increasing its share of the electricity market in Western Australia (WA) starting at 1 per cent and rising to about 50 per cent by 2008. Had it continued on this trajectory, the WA power system would have made great advances in terms of cost and environmental efficiencies given the looming commencement of the Carbon Pollution Reduction Scheme in Australia from 2011. However, more recently the cost of natural gas has increased from $3/GJ to $7/GJ following the sudden collapse of the East Spar gas field in the North West Shelf. In this article, we analyse the impact of the gas price increase and demonstrate that despite being the most environmentally efficient conventional technology, natural gas combined cycle plant has been squeezed out of the market which in turn will increase forward electricity price risks to WA consumers through greater exposure to CO₂ pricing in the long run.     

ON THE IMPACT OF HETEROGENEITY ON INDETERMINACY*

Some recent research indicates that the occurrence of indeterminacy in models with externalities may be overstated because these models ignore agents' heterogeneity. We consider a neoclassical two‐sector growth model with technological externalities. Agents are heterogeneous with respect to their shares of the initial stock of capital and in labor endowments. We find that the sign of the effect of inequality on indeterminacy is not pinned down by the standard properties of preferences. However, when the inverse of absolute risk aversion is a convex (respectively concave) function, homogeneity (heterogeneity) tends to neutralize the external effects and eliminate indeterminacy.     

ILLEGAL MUSIC DOWNLOADING AND ITS IMPACT ON LEGITIMATE SALES: AUSTRALIAN EMPIRICAL EVIDENCE

This paper explores illegal music file‐sharing activity and its effect on Australian sales of singles in the physical and digital retail markets. Using fifteen weeks of Australian Recording Industry Association weekly chart rankings of physical and digital sales, combined with a proxy for download activity derived from the popular peer‐to‐peer (P2P) network Limewire, the evidence suggests no discernible impact of download activity on legitimate sales. Whilst significant negative correlation between chart rank and download activity is observed in the digital market, once download endogeneity is purged from the model and song heterogeneity is controlled for no significant relationship remains.     

INTER-OCCUPATION DIFFERENCES IN THE PATTERN OF MONETIZED AND NON-MONETIZED CONSUMER EXPENDITURE IN RURAL INDIA*

This study attempts to examine the inter-occupational differences in the patterns of cash and in-kind expenditure in rural India on the basis of a special tabulation of The National Sample Survey (NSS), 18th round (February 1963-January 1964) consumer expenditure data. The occupational groups considered here are (i) cultivators, (ii) agricultural labourers, (iii) other agriculture, and (iv) non-agricultural occupations. The analysis is carried out primarily in terms of curves relating item-specific cash/kind expenditure to total cash/total kind expenditure for fifteen selected item-groups of expenditure. For each item-occupation combination, four two-parameter forms of Engel curve together with the log-log-inverse form are estimated and the comparisons across occupation groups are made separately on the basis of each of the two-parameter curve forms which were found to give the best fit for at least one occupation group as well as the log-log-inverse form, using analysis of covariance technique. The results indicate that so far as the cash components of item expenditures are concerned, the pattern of expenditure is considerably influenced by occupational factors. It is observed that cultivators have a cash expenditure pattern different from those of agrictural labourers and of households with non-agricultural activities. The comparison of the kind expenditure patterns does not, however, reflect any clear picture primarily because in most cases the itemwise kind expenditure functions could not be estimated satisfactorily. This analysis also suggests that the specification of itemwise cash and kind expenditure functions employed here may not be the most satisfactory ones in an economy with a high degree of non-monetization and therefore alternative specifications need be examined.     

THE DISTRIBUTION OF HOUSEHOLD INCOME AND EXPENDITURE IN PORTUGAL: 1980 AND 1990

From 1980 to 1990 Portugal experienced a generalized liberalization of economic activity, due in large part to its 1986 integration in the European Union. This paper studies the changes in the Portuguese distribution of household income and expenditure during this period, using micro-data on household budgets and applying recent developments in statistical inference for Lorenz curves. We find a significant increase in six measures of welfare and an unambiguous decrease in the inequality of the respective distributions. Different explanations for the findings of decreased inequality are discussed.     

THE IMPACT OF SODA SALES TAXES ON CONSUMPTION: EVIDENCE FROM SCANNER DATA

Scientific evidence on the effect of sugar consumption on obesity has propelled policy makers in several states across the United States to propose the imposition of a tax on soft drinks sales. In this article, we look at the effect of two tax events: a 5.5% sales tax on soft drinks imposed by the state of Maine in 1991 and a 5% sales tax on soft drinks levied in Ohio in 2003. We investigate this question by using sales data collected by scanner devices in the two states, where soda taxes where enacted as well as on neighboring states. We employ a difference‐in‐difference matching estimator (DIDM) that, in our setting, permits the comparison among treatment and control groups based on brand identity. Results suggest that neither sales tax had a statistically significant impact on the consumption of soft drinks. This finding is robust to several alternative specifications. (JEL D12, H22, C90, L66)