A TEST OF A GENERAL EQUILIBRIUM STOCK OPTION PRICING MODEL

An empirical version of the Cox, Ingersoll, and Ross (1985a) call option pricing model is derived, assuming execution price uncertainty in the options market. the pricing restrictions come in the form of moment conditions in the option pricing error. These can be estimated and tested using a version of the method of simulated moments (MSM). Simulation estimates, obtained by discretely approximating the risk-neutral processes of the underlying stock price and the interest rate, are substituted for analytically unknown call prices. the asymptotics and other aspects of the MSM estimator are discussed. the model is tested on transaction prices at 15-minute intervals. It substantially outperforms the Black-Scholes model. the empirical success of the Cox-Ingersoll-Ross model implies that the continuous-time interest rate implicit in synchronous transaction quotes of 90-day Treasury-bill futures contracts is an-albeit noisy-proxy for the instantaneous volatility on common stock. the process of the instantaneous volatility is found to be close to nonstationary. It is well approximated by a heteroskedastic unit-root process. With this approximation, the Cox-Ingersoll-Ross model only slightly overprices long-maturity options.     

Is advertising rational?

Advertising is not a process by which gullible consumers are persuaded to buy things they don't want, according to the authors of this paper. Instead, it furnishes consumers with some useful information. It is not so much the claims made by advertisers that are helpful, but the fact that they are willing to spend extravagant amounts of money on a product that is informative. The authors find tentative evidence for this view of advertising and discuss its implications.     

Risk and the User Cost of Housing Services

This paper derives a risk-adjusted user cost for housing services, capable of application in price indexes, demand, and the measurement of income and returns to homeownership. The risk-adjusted user cost is the after-tax sum of an interest rate and a risk premium, less expected capital gains. Expected capital gains are based on a factor pricing specification. It is shown that both national and local factors affect capital gains on housing.     

Monetary Policy in Australia: The Conflict between Short-Term and Medium-Term Objectives

This article argues that the recent implementation of monetary policy in Australia has been dominated by the response to a large range of unanticipated shocks. In the process of trying to minimise the adverse effects of such shocks, considerable uncertainty has been created about likely outcomes in the medium term. This makes medium-term objectives harder to achieve. Taking the reduction of inflation as an example of an appropriate medium-term objective, simulations are presented using the Murphy model of the Australian economy. The simulations demonstrate that a tightening of monetary policy will reduce inflation more slowly if private agents believe that the tightening is unlikely to be sustained for long. Under uncertainty, monetary policy will have to be tighter and real GDP significantly lower to achieve a given reduction in inflation. A confingency rule of medium complexity is suggested as one way in which appropriate medium-term objectives might be achieved while allowing some flexibility to react to unexpected outcomes in the short run.     

A Consistent Poverty Approach to Assessing the Sensitivity of Income Poverty Measures and Trends

This paper examines the sensitivity of estimates of income poverty rates and trends to variations in the poverty line and to whether or not certain households are included or excluded from the sample used to estimate poverty. The approach draws on the concept of consistent poverty, which has been used to identify those with incomes below the poverty line who also experience deprivation. Our approach involves excluding households with incomes below the poverty line if they report zero or negative income or are self‐employed, have expenditure well in excess of their income, have substantial wealth holdings, or if they do not report having experienced financial stress over the past year. The combined impact of all four exclusions is to reduce the half‐median income poverty rate from 9.9 per cent to 5.4 per cent, but also suggests that poverty increased by more over the decade to 2003–04 than the original estimates indicate.     

How road improvement reduces poverty: the case of Laos

A general equilibrium modeling approach is used to study the effect that rural road improvement has on poverty incidence in Laos. Household survey data are used to distinguish three categories of rural villages according to their road access: (i) no vehicular access; (ii) dry season only access; and (iii) all weather access. A general equilibrium model of the Lao economy is then used to simulate, first, the effect of upgrading category (i) to category (ii) roads, and second, category (ii) to category (iii) roads. The former has a larger poverty‐reducing effect but is also more costly.     

Supplier strategy and customer responsiveness: Managing the links

Responsiveness to the customer is a fine ideal. Making it a reality is increasingly critical to gaining competitive advantage. In practice, it often means more variety at shorter notice. Faced with these challenges, companies must look to their suppliers for support. Instant market intelligence and flexible manufacturing are worth little if they face bottlenecks in getting the right supplies. Becoming customer responsive therefore starts with supplier strategy. Success requires better ways of managing the commercial links.