A Simple Model of Insurance Market Dynamics

Abstract

This paper constructs and studies a simple but realistic model of an insurance market. The model has a minimalist construction in the sense that the number of parameters defining it is strictly limited and the elimination of any one of them would destroy its realism. There are 11 essential parameters. Each of the parameters has a physical interpretation. Some determine competitive effects within the market, some barriers to entry, and so on. The effect of each on various aspects of the market is examined in the presence of simulated loss experience. The aspects of the market considered include stability of premium rates, profitability, and market concentration. Some of the parameters are capable of use as regulatory controls. Two parameters, in addition to the original 11, are explicit price controls. Despite its simplicity, the model displays considerably complex behavior. Some results are intuitive, but some are not. For this reason, regulatory controls need to be applied with great caution lest they induce perverse effects, possibly even the reverse of those intended. The effect of the parameters on market behavior is first studied in the absence of catastrophic events from the loss experience. Subsequently, the effect of a single such event is studied.     

Performance measurement,modes of evaluation and the development of compromising accounts

In this paper we develop the concept of compromising accounts as a distinctive approach to the analysis of whether and how accounting can facilitate compromise amongst organizational actors. We take the existence of conflicting logics and values as the starting point for our analysis, and directly examine the ways in which the design and operation of accounts can be implicated in compromises between different modes of evaluation and when and how such compromises can be productive or unproductive. In doing so, we draw on Stark’s (2009: 27) concept of ‘organizing dissonance’, where the coming together of multiple evaluative principles has the potential to produce a ‘productive friction’ that can help the organization to recombine ideas and perspectives in creative and constructive ways. In a field study of a non-government organization, we examine how debates and struggles over the design and operation of a performance measurement system affected the potential for productive debate and compromise between different modes of evaluation. Our study shows that there is much scope for future research to examine how accounts can create sites that bring together (or indeed push apart) organizational actors with different evaluative principles, and the ways in which this ‘coming together’ can be potentially productive and/or destructive.     

A number‐of‐modes reference rule for density estimation under multimodality

We consider kernel density estimation for univariate distributions. The question of interest is as follows: given that the data analyst has some background knowledge on the modality of the data (for instance, ‘data of this type are usually bimodal’), what is the adequate bandwidth to choose? We answer this question by extending Silverman's idea of ‘normal‐reference’ to that of ‘reference to a Gaussian mixture’. The concept is illustrated in the light of real data examples.     

Management practices in Australasian ethical investment products: a role for regulation?

This paper adds to the literatures on socially responsible investment (SRI), investment management, regulation of financial services and social accounting by providing a comprehensive survey of investment methods used in SRI products and regulated social reporting in financial services. Australian and New Zealand regulations require issuers of self‐declarative SRI products to provide details on methods used in portfolio construction. Regulators' objectives to standardize the reporting of portfolio construction and thus improve its comparability were identified by examination of parliamentary debates and other public reports. Portfolio construction styles of 86 SRI products managed by 63 financial institutions in Australia and New Zealand were chosen for analysis. Statistical analysis was conducted to identify associations between styles, construction methods and assessment techniques over a four‐year period: 2004–2007. These aspects were further examined in 18 case studies. Over the period, diversity and intensity of construction methods had increased both within and between investment managers. The non‐standard nature of management consultation used in SRI products, marketing needs to distinguish rather than standardize investment methods and the types of information thought relevant to clients did not reconcile easily with the types of information required by regulation. The more recent products in the sample tended to reference market indexes in portfolio construction, separate social considerations from financial considerations and delegate qualitative assessments of invested companies. Consumer policy implications arise from questions bearing on the integrity of information attached to investment products and the effective monitoring of delegated investment processes. Copyright © 2008 John Wiley & Sons, Ltd and ERP Environment.     

Evaluating Advice: Self‐Presentational Biases between High and Low Self‐Monitors

Previous research has demonstrated that high and low self‐monitors sought advice from others who shared their underlying motivational dispositions. Here, three studies extend the prior research by exploring how consumers’ underlying motives direct the type of advice offered and how it is evaluated. In Study 1, high and low self‐monitors were asked to evaluate the advice they gave others. As predicted, high self‐monitors rated their advice more favorably than did low self‐monitors. The underlying motivation that caused high self‐monitors to evaluate their advice more positively was investigated in Study 2. Results indicated that high self‐monitors rated their advice higher because it appeared to be meeting a social‐adjustive function (i.e., self‐presentational needs). In Study 3, high and low self‐monitors created an advertisement that featured their advice on dating for a fictitious online matchmaking service. As expected, advertisements created by high self‐monitors contained advice that addressed social‐adjustive needs while those created by low self‐monitors contained advice that addressed value‐expressive needs. The results of these studies suggest that underlying motivations of the individual play an active role in how advice is crafted and evaluated.     

Competing priorities as constraints in event travel careers

An event travel career is a potentially lifelong pattern of travel to events linked with an individual’s preferred leisure activity. This paper applies the concept of an event travel career to non-elite triathletes. For these active sport tourists, ongoing pursuit of an event travel career is arguably constrained by competing priorities that intervene between everyday life and their pursuit of an event travel career. In-depth interviews were conducted with 21 triathletes identified as pursuing an event travel career. Interpretive analysis revealed seven domains of competing priorities that could work to constrain their event travel career aspirations. These domains included familial relationships, domestic responsibilities, sociability, finances, leisure, wellbeing, and work/education. The seven competing priority domains were interrelated, and cyclical in their constraining effects. Data assisted in clarifying some defining characteristics of the event travel career concept, and challenged notions of leisure participation as entirely positive and fulfilling.     

Leading to Learn

“You don't see to draw, you draw to see.” And then Fred said, “It's just the same for leadership, you don't learn to lead, you lead to learn.” The arts can teach us to stay with our senses and not know and in that way to provide a balance to the dominance of the analytic approaches to our organizational worlds. There is an old saying that you can only manage what you can measure. The arts can help us to work with what we cannot measure and the way to do that is by leading to learn. The current article explores the qualitatively different way in which the arts teach us to apprehend the world and how that is central to leadership.     

An Empirical Analysis of Triple Bottom-Line Reporting and its Determinants: Evidence from the United States and Japan

This paper investigates triple bottom‐line (TBL) disclosures of 50 of the largest US and Japanese companies. Twenty disclosure criteria were developed for each of the TBL disclosure areas: economic, social, and environmental. Disclosure information was examined in annual reports, stand‐alone reports, and special website reports. Regression analysis was used to examine empirically the determinants of TBL disclosure practice. Our results indicate that, for total TBL disclosure (combining economic, social, and environmental categories), the extent of reporting is higher for firms with larger size, lower profitability, lower liquidity, and for firms with membership in the manufacturing industry. Further analysis indicates that the results for the total TBL disclosure are primarily driven by non‐economic disclosures. We also find that the extent of overall TBL reporting is higher for Japanese firms, with environmental disclosure being the key driver. This result could be attributed to the differences in national cultures, the regulatory environment, and other institutional factors between the United States and Japan.