Do S&P 500 index options violate the martingale restriction?

The study tests Longstaff's martingale restriction on S&P 500 index options over the period 1990–1994. Assuming the S&P index follows a lognormal distribution results in systematic violations of the martingale restriction, the implied index value from options consistently overestimating the market value. Adopting a generalized distribution, allowing for nonnormal third and fourth moments, produces economically insignificant rejections of the martingale restriction. A simulation analysis supports the empirical results from the lognormal model in the presence of nonnormal skewness and kurtosis. Overall, the results support the conclusion that the no-arbitrage assumption coupled with the generalized distribution offers a good working model for S&P index options over the period studied. © 1999 John Wiley & Sons, Inc. Jrl Fut Mark 19: 499–521, 1999     

Recreation Demand and Residential Location

We use the properties of competitive location equilibrium to study the demand for recreation and the choice of primary residence location. Location-specific recreation and employment lead to pooling equilibria in which consumers reside according to their preference for recreation. In general, the stronger the taste for recreation, the greater the attraction of living close to the recreation site and the lower the demand for other goods, including housing. We explore the effects of trip frequency, trip length, and recreation cost on the spatial distribution of consumers. We also consider the effect of the wage rate on recreation and location demands.     

MRP II (material requirements planning): one year later

This article addresses the continued need for the behavior change process that must be managed long after materiel requirements planning (MRP II) implementation. Mason & Hanger, Pantex Plant is the final assembly and dismantlement facility for all United States nuclear weapons. On October 1, 1990, Mason & Hanger implemented a full production cutover to MRP II. One year later, following class A certification, the MRP II implementation team is still actively managing the change process through education and training programs and overall continuous improvement initiatives. Actual behavior change problems are identified together with the proven solutions implemented in a government-owned, contractor-operated facility environment. Performance measurements ranging from senior management planning to shop floor accomplishments and cost variance reports are shown as normal management tools used to identify target improvement areas.     

Evaluating Service Marketing in Airline Industry and Its Influence on Student Passengers' Purchasing Behavior Using Taipei–London Route as an Example

This article reports an empirical study into airline consumer purchase behavior on a major global route between the United Kingdom (UK) and Taipei. It focuses on the factors influencing airline choice for a sample of 60 Taiwanese students based at UK Universities and traveling on five airlines: British Airways, Cathay Pacific Airways, China Airlines, EVA Airways, and Royal Dutch Airways. Several stages of data gathering were undertaken and a well‐established analytical framework for services marketing was used to identify gaps between the desired and received service. The main findings suggest that service quality, including in‐flight entertainment, cabin crew attitude, and seating comfort, can be as important as, or more important than, price in student purchase decisions for long‐haul flights. Other important factors in carrier choice included student discounts, baggage allowances, and airline safety record.     

Buyer seller relationships in the UK insurance market: Is this the key competitive advantage?

In services marketing much of the recent literature recommends the use of relationship marketing frameworks rather than the extended marketing mix which adds people, process and physical evidence to the traditional four Ps of product, price, promotion and place. In the UK permanent health insurance sector some suppliers sell through intermediaries, making this an ideal environment for testing the value of relationship marketing. Using the Industrial Marketing and Purchasing (IMP) group framework, interviews were conducted with 100 intermediaries. Respondents were asked to rate their top two suppliers against five relationship marketing variables: commercial skills, technical skills, commitment, adaptability and conflict management.The data showed the top supplier was rated more highly than the second supplier in three of the criteria:— commercial skills— technical skills— adaptability.Two of the criteria, commercial skills and technical skills, showed significant differences. The results of this research provide support for the importance of relationship marketing within this sector of the insurance market. For suppliers in the insurance industry, developing competencies in adaptability and conflict management may be the best method both to differentiate the firm and to develop competitive advantage.     

Product elimination: A barrier to successful financial service sector company mergers?

The UK's financial service sector is in a process of consolidation predominately via merger and acquisition activity. Driving this process is the desire to reduce costs, increase efficiency and acquire larger customer volumes. This may result in the amalgamation of product management functions and product portfolios, leading inevitably to the need for product rationsalisation. A key controlling factor within this is the inability easily to eliminate financial service products. This may jeopardise the organisation's ability to gain the objectives that have driven the merger/acquisition action. Two key factors were seen to hinder the portfolio amalgamation process. First, the incompatibility of IT-based product management systems. Secondly, the existence of a ‘knowledge gap’ which made it harder to plan and implement effectively large-scale product elimination and portfolio amalgamation. It is likely that this will lead to higher than desired operating costs, duplication in product and service function, and loss of freedom in managing customers.     

Auditors' Predisposition to Provide Fair Judgments: Australian Evidence of Auditors' Level of Moral Reasoning

Auditors have a responsibility to provide fair and independent opinions about managemenfs preparation of company financial statements. This study examines auditors' predisposition to provide just and fair judgments, using Kohlberg's theory of developmental moral reasoning, one of the most widely accepted theories in justice psychology. The results indicate that a majority of auditors have the predisposition to act fairly, particularly when faced with an ethical crisis. A smaller number are likely to act in their own self-interest and do the right thing only to avoid punishment. These auditors have the ability to "do deals" and, when faced with an ethical crisis, may tend to focus on their own needs at the expense of others.