Ordering univariate distributions by entropy and variance

This paper examines the role of variance and entropy in ordering distributions and random prospects. There is no universal relation between entropy and variance orderings of distributions. But we place their relationship in the context of a stronger ordering relation known as dispersion ordering. Further, some conditions are identified under which variance and entropy order similarly when continuous variables are transformed. We also analyze parametric changes which do not disturb the agreement between these rankings. The results are conveniently tabulated in terms of distribution parameters.     

Efficiency,Cointegration and Contagion in Equity Markets: Evidence from China,Japan and South Korea*

This paper empirically examines whether three East Asian stock markets, namely, those of China, Japan and South Korea, are individually and/or jointly efficient, and whether contagion exists between the cointegrated markets. While individual market efficiency is examined through testing for the random walk hypothesis, joint market efficiency is examined through testing for cointegration and contagion. The present study finds that the hypothesis of individual market efficiency is strongly rejected for the Chinese stock market, but not for the Japanese and the South Korean stock markets. However, when testing for cointegration, market efficiency is strongly rejected for all these markets. We take a simple case of contagion and find that although there is a long‐term relationship among the three markets, the contagion hypothesis cannot be rejected only between Japanese and South Korean stock markets, indicating short‐run portfolio diversification benefits from these two markets.     

Random walk and efficiency tests in the Asia-Pacific foreign exchange markets: Evidence from the post-Asian currency crisis data

This paper empirically tests the random walk and efficiency hypothesis for 12 Asia-Pacific foreign exchange markets. The hypothesis is tested using individual as well as panel unit root tests and two variance-ratio tests. The study covers the high (daily) and medium (weekly) frequency post-Asian crisis spot exchange rate data from January 1998 to July 2007. The inferential outcomes do not differ substantially between the unit root tests and the variance-ratio tests when using daily data but differ significantly when using weekly data. With the daily data, both types of unit root tests identify unit root components for all the series and two variance-ratio tests provide the evidence of martingale behavior for majority of the exchange rates tested. With the weekly data, panel unit root tests identify unit root component for the exchange rates and, the unit root tests on a single series basis identify unit root component for 10 foreign exchange markets. However, the variance-ratio tests reject the martingale null for the majority of the exchange rates when using weekly data.     

Modeling the dependence structure between default risk premium,equity return volatility and the jump risk: Evidence from a financial crisis

This paper investigates the dependence structure between default risk premium, equity return volatility and jump risk in the equity market before and during the subprime crisis. Using iTraxx CDS index spreads from Japanese and Australian markets, the paper models the different relationships that can exist in different ranges of behavior. We consider several Archimedean copula models with different tail dependence structures, namely, Gumbel, Clayton, Frank, AMH and Joe copulas. Although the dramatic change in the levels of the iTraxx CDS index, we find strong evidence that the dependence structure between CDS and stock market conditions is asymmetric and orienting toward the upper side. In addition, we find that the Japanese CDS market is more sensitive to the stock return volatility than the jump risk and the magnitude of this sensitivity is related to the market circumstances. However, Australian CDS market is more sensitive to the jump risk than stock return volatility before and during the financial crisis. This result has important implications for both global financial stability and default risk management. Specifically, the heterogeneity of markets, coupled with the diversity in the risk exposures cause the default risk premium and equity markets to exhibit different levels of sensitivity.     

Curriculum Internationalization at AACSB Schools: Immersive Experiences,Student Placement,and Assessment

This article presents results from a survey of AACSB-accredited business schools’ progress in internationalizing their curricula in view of a recent AACSB report. We present data on the use of immersive experiences, degree of success in student placement in internationally oriented careers, and assessment of internationalization efforts. The results indicate growth of internationalization activities at virtually all schools as expected, but these efforts may not always match AACSB recommendations. For instance, AACSB criticized business programs for not coordinating internationalization activities in a strategic manner to improve courses and develop skills needed by international managers. Our survey finds that many schools do not attempt to tie their international experiences to specific courses, but they report the experiences are used to build skills students need. Most institutions also do not examine job placement as a measure of curriculum internationalization success. We find that many schools do not assess the outcomes of their internationalization efforts in a way that can demonstrate whether or not recent AACSB suggestions are being met.     

Material weakness disclosures and restatement announcements: The joint and order effects

We examine differences in stock price, option volatility, and litigation reactions to restatement announcements that are associated with a material weakness (MW) disclosure. Contrasted with restatements that are not associated with any MW disclosure, our analyses reveal that firms that announce both a restatement and an associated MW experience significantly more negative market returns, greater implied volatility, and higher likelihood of class action lawsuits. Separating the restatements into timely reporters, where the MW precedes the restatement, and non‐timely reporters, where the MW is concurrent with or follows the restatement, we find that timely reporters experience more negative returns at the time of the restatement, relative to non‐timely reporters, suggesting that investors perceive the early MW disclosure to signal more pervasive control‐related problems. Interestingly, we find that timely and non‐timely reporters are equally likely to be sued, consistent with the argument that wrongdoing (through either a timely or non‐timely MW disclosure) provides stronger grounds for establishing scienter. However, timely reporters appear to secure more favorable litigation outcomes: they face higher likelihood of lawsuit dismissals and pay much lower settlements, compared to non‐timely reporters. Overall, our evidence provides new insights into how market participants incorporate information about internal control weaknesses into their perceptions regarding the economic implications of financial restatements, and financial reporting quality.     

Receiving,Recording, and Responding to Customer Complaints: The Effects of Formalizing Customer Complaint Handling Policies in Retail Firms

ABSTRACT

Given the critical need for retail firms to provide high quality customer service and satisfaction, this article investigates the importance of formalizing customer complaint handling policies and procedures with regard to its relationship to the ways in which retail companies receive, record, and respond to customer complaints. A survey of 184 firms from the retail environment of a midsized community reveals that the existence of such formalized procedures is significantly associated with firm size, better channels of communication with customers, mechanisms of recording customer feedback, and better-trained employees, which have been shown to relate to higher firm performance.     

Corporate Social Responsibility: Its Economic Impact and Link to the Bullwhip Effect

This paper examines the economic impact of implementing Corporate Social Responsibility (CSR) in the supply chain operations of multinational corporations (MNC). Because they have global supply chains in emerging markets, MNCs face certain operational challenges. For example, unethical operations often result in a huge loss to MNCs in the long run, even though their initial cost seems to be low. In this paper, we extend the Bullwhip Effect theory in supply chain management to the ethical operations context, and define and evaluate a special Bullwhip Effect due to Unethical Operations (BEUO). Using economic data from various sources including Ford, Toyota, and GM in the auto industry, we first estimate the indices of BEUO for the three companies and demonstrate the economic necessity for MNCs to incorporate CSR with supply chain operations. We then propose a coherent approach, blending what we term the bottom-up and proactive methods, to achieve such an outcome. The bottom-up approach requires MNCs to switch their focus on stakeholders, shifting from shareholders to consumers and workers, and on decision levels from public relationships to supply chain operations. The proactive approach recommends initializing specific CSR operations to mitigate the negative impact of BEUO. Both theoretical analysis and case studies are conducted to evaluate our developed propositions that MNCs adopting the proposed CSR operations will in the long run achieve better economic performance. Recommended actions for implementation, based on best practices, are also presented.     

ISLAMIC BANKING,COSTLY RELIGIOSITY,AND COMPETITION

In this article we explain how Islamic banks (IBs) maximize profitability in the presence of costly religiosity. Because of strong competition between IBs and conventional banks (CBs), a unique equilibrium emerges that affects the IB pricing structure. We propose a new model that identifies the optimal rate on the asset and liability sides of IBs. It shows that the financial products offered by IBs are not an exogenous function of religiosity; instead, they are endogenously determined by the nature of market forces in which IBs are operating. We show that in the presence of costly religiosity and competition, the rates of both converge. Moreover, the competitive pricing mechanism induces IBs to structure their asset- and liability-side financial products (particularly Murabaha) with a risk profile similar to that of the CB loan system. This article empirically supports the theoretical propositions by using data from 17 Muslim majority countries where both IBs and CBs coexist from 2000 to 2015. We find that, holding other factors of bank returns constant, competition significantly affects IB asset- and liability-side returns. The analysis also reveals that because of increasing competition between IBs and CBs, the market power of IBs has significantly declined over time.