Multiple patterns in the dynamics of a stock market model

We study a non-linear model of the interactions between stock market prices and the level of assets owned by investment funds. The model dynamics is described, in continuous time, by a smooth vector field in the plane, which presents, under suitable hypotheses, a unique equilibrium point.Our analisis of the system flow is qualitative and focuses on detecting endogenous fluctuations of the state variables, i.e. on checking existence and number of limit cycles.We prove that several, and quite different, dynamical patterns can occur, even in cases where the system isoclines assume that most simple geometrical forms.It is shown, in particular, that the equilibrium point can undergo either a sub-critical or a super-critical Hopf-bifurcation whenever two economically meaningful exogenous parameters are made to cross a given set of critical values. Hence, in the subcritical case, as a trapping region exists, at least two limit cycles appear.Next, we give analytical examples of model-consistent vector fields which present a multiplicity of fluctuating trends, and prove the apparently surprising result that the number of limit cycles can be as large as one wants, provided a specific isocline assumes a cubic shape.Both authors are members of the Gruppo Nazionale per l'Analisi Funzionale e le sue Applicazioni-G.N.A.F.A. of the Italian Council of Researches-CN.R.The present paper refers to the activities of the National M.U.R.S.T. Group Dinamiche Non Lineari ed Applicazioni alle Scienze Economiche e Sociali.     

Cognitive job crafting: A possible response to increasing job insecurity and declining professional prestige

Recent research has shown that job crafting, which describes individuals' attempts to craft a job to make it correspond more to personal inclinations, skills, and abilities, can generate significant work and nonwork benefits for individuals. Using the theoretical lens of activation theory, we examined whether professionals are prompted to cognitively craft their jobs in response to the increasing perception of precarisation of their profession, measured in terms of job insecurity and perceived external prestige. We adopted a mixed methods approach among professional accountants operating in Southern Italy and the results indicated the presence of two curvilinear relationships. More specifically, we found that accountants were more likely to engage in cognitive crafting when experiencing moderate levels of job insecurity (rather than high or low) and in the presence of both low and high levels of perceived external prestige (rather than a moderate level). Implications for theory and practice are discussed.     

Precautionary principle as a rule of choice with optimism on windfall gains and pessimism on catastrophic losses

The paper investigates a decision-making process involving both risk and ambiguity. Differently from existing papers [Basili, M., Chateauneuf, A., Fontini, F., 2005. Choices under ambiguity with familiar and unfamiliar outcomes, Theory and Decision 58, 195-207; Chichilnisky, G., 2000. Axiomatic approach to choice under uncertainty with catastrophic risks. Resources and Energy Economics 22, 221-231; Chichilnisky, G., 2002. In: El-Shaarawi, A.,H., Piegorsch, W.W. (Eds.), Catastropic Risks. Encyclopedia of Environmetrics, vol. 1. John Wiley & Sons, Ltd, Chichester, UK, pp. 274-279], we assume that, in a Choquet Expected Utility framework, the decision-maker is pessimistic with respect to unfamiliar (catastrophic) losses, optimistic with respect to unfamiliar (windfall) gains and ambiguity-neutral with respect to the familiar world. A representation of the decision-maker's choice is obtained that mimics the Restricted Bayes-Hurwicz Criterion. In this way a characterization of the Precautionary Principle is introduced for decision-making processes under ambiguity with catastrophic losses and/or windfall gains.     

What principles should inform poverty indices? Insights from a cross-country survey

1,392 undergraduate students from Bolivia, Brazil, France, Italy, Kenya, Laos, Switzerland and the UK are involved in a survey exploring the support for customary poverty measurement principles. Our study allows us to enhance the studies of Amiel and Cowell (Empir Econ 22:571–588, 1997; The distribution of welfare & household production. International perspectives, 1998) in a variety of directions. We find that the support for Weak Monotonicity crucially depends on whether the poor income rises or falls and the (generally low) agreement with Regressive Transfer is even lower if the recipient is lifted out of poverty as a consequence of the transfer. Further, the support for a certain poverty axiom can significantly differ according to the characteristics of the income distributions to be compared, as is the case for Population Replication and Poverty Growth when, respectively, the society to be replicated and the poor person added to society are very poor ones. Our results also suggest a certain concern for the poorest in society and cast doubts on the desirability of continuity at the poverty line. Finally, notable heterogeneity emerges across relevant subgroups. Poverty perceptions are significantly different for students living in high- and low-income countries: the latter more strongly support Weak Monotonicity and Regressive Transfer, unveiling a more pronounced sensitivity to lower levels of poor incomes. Interesting differences, though less marked, are also found between the views of economics students and those of their colleagues from other disciplines.     

Comply or Explain: Investor Protection Through the Italian Corporate Governance Code

Nearly 86% of listed Italian companies now claim to be in formal compliance with the provisions of the Italian Corporate Governance Code, which, like many codes in EU countries, give companies the option to either comply or explain their decision not to do so. But in the wake of the recent financial crisis, the effectiveness of such self‐regulatory corporate governance codes has been subjected to increasing skepticism. In particular, critics wonder whether such governance codes actually encourage the adoption of best practices and promote better governance. This article presents a governance indicator (CoRe) devised by the authors that attempts to assess the actual, or effective, levels of compliance with the Italian Corporate Governance Code in terms of listed companies' procedures for dealing with related party transactions (RPTs). The authors report that the companies' level of effective compliance with regard to RPTs is considerably lower than their publicly reported levels of formal compliance. The authors also report that higher levels of effective compliance tend to be found in companies where (1) minority shareholders have appointed one or more directors; (2) independent directors serve on important committees; and (3) there are significant holdings by institutional investors—particularly foreign investors—who participate in general shareholder meetings.     

SHACKLE AND MODERN DECISION THEORY

The paper discusses the role of George L.S. Shackle in fostering an unconventional approach to individual decision making. Up until the early 1970s Shackle was the single critic of the probabilistic approach to decision making who proposed an alternative formal corpus for dealing with uncertainty. The main aim of the paper is to analyse Shackle's non‐probabilistic conceptualization of individual decisions under uncertainty from a specific viewpoint, namely that of a possible connection between his theory and one of the most interesting recent approaches to decision under uncertainty, the so‐called non‐additive probability approach of Gilboa and Schmeidler. The paper shows that these developments in modern decision theory take Shackle's issue seriously and confirm that the reliance of strict Bayesian theory on probabilistic judgements based on point‐probability estimates, a reliance that Shackle intended to oppose, is untenable. Non‐additive decision theory also provides a usage of non‐additive probability distributions in choice that is an alternative to Shackle's approach of using a qualitative notion of probability, such as potential surprise.     

Innovation in the Retail Banking Industry: The Diffusion of Credit Scoring

We study technology diffusion in the retail banking industry. Our contribution to the empirical literature is twofold: Firstly, we explore technology diffusion in the financial sector, whose relevance has often been neglected; secondly we focus on credit scoring adoption, a relevant process innovation still under-explored. Estimating a set of duration models, we analyze the patterns of diffusion of this technology among Italian banks. We find that credit scoring is firstly introduced by large banks with broad branch networks, which can fully exploit scale economies. We present robust evidence that banks with large market shares operating in more concentrated markets are early adopters, providing a direct support of the Schumpeterian hypothesis that market power enhances innovation.The views expressed here are those of the authors and do not necessarily reflect those of the Bank of Italy.     

Shocks,financial dependence and efficiency: Evidence from U.S. and Canadian industries

This paper investigates how changes in industries’ funding costs affect total factor productivity (TFP) growth. Based on panel regressions using data for U.S. and Canadian industries and industries’ dependence on external funding as an identification mechanism, we show that increases in the cost of funds affect TFP growth negatively. The effect is non‐monotonic depending on a sector's external finance need. This paper presents a theoretical model that produces the observed non‐monotonic effect of financial shocks on TFP growth and suggests that financial shocks distort the allocation of factors across firms even within an industry, thus reducing TFP growth.     

A Primer on Financial Contagion

Abstract.  This paper presents a theoretical framework to highlight possible channels for the international transmission of financial shocks. We first review the different definitions and measures of contagion adopted by the literature. We then use a simple multi-country asset pricing model to classify the main elements of the current debate on contagion and provide a stylized account of how a crisis in one country can spread to the world economy. In particular, the model shows how crises can be transmitted across countries, without assuming ad hoc portfolio management rules or market imperfections. Finally, tracking our classification, we survey the results of the empirical literature on contagion.     

Mapping Corporate Responsibility and Sustainable Supply Chains: an Exploratory Perspective

Corporate responsibility (CR) in general, and sustainable supply chain management in particular, have been a growing concern for companies and researchers over the past decade. However, in scholarly work, sustainability has often been dealt with in a generic fashion or from an anecdotal point of view. Further, research works examining CR on the one hand and sustainable supply chains on the other have been conducted separately. We undertake the multiple factor analysis of a CR rating database (Innovest) which reports longitudinal scores for both the social and environmental performance of 1198 companies in different countries and distinct industries, to demonstrate a strong relationship between CR and a sustainable supply chain. Our findings from exploratory analysis also illustrate the role of country of origin and industry in shaping CR behaviour, highlighting isomorphic as well as allomorphic trends for CR trough time. Copyright © 2012 John Wiley & Sons, Ltd and ERP Environment.