Asymmetric information and corporate derivatives use

We investigate the relationship between derivatives use and the extent of asymmetric information faced by the firm. Using alternative analyst forecast proxies for asymmetric information, we find evidence that both the use of derivatives and the extent of derivatives usage is associated with lower asymmetric information. Specifically, for firms using derivatives (notably currency derivatives) we find that analysts' earnings forecasts have significantly greater accuracy and lower dispersion. These findings support the conjectures of DeMarzo and Duffie (1995) and Breeden and Viswanathan (1998) who argue that hedging reduces noise related to exogenous factors and hence decreases the level of asymmetric information regarding a firm's earnings. © 2002 John Wiley & Sons, Inc. Jrl Fut Mark 22: 241–267, 2002     

Trend in aggregate idiosyncratic volatility

We suggest that price interaction among stocks is an important determinant of idiosyncratic volatility. We demonstrate that as more (less) stocks are listed in the markets, price interaction among stocks increases (decreases), and hence stocks, on average, become more (less) volatile. Our results show that price interaction has a significant positive effect of idiosyncratic volatility. The results of various robustness checks indicate that the effect of price interaction is still significant to the presence of liquidity, newly listed firms, cash flow variables, business cycle variables, and market volatility. Once the price interaction effect is taken into account, no trend remains in idiosyncratic volatility. We conclude that there is no trend, but a reflection of the positive effect of price interaction on idiosyncratic volatility.     

Effects of hospital leadership,organizational systems,and ESWOS on medical error reduction

One of the major elements of care quality provided by health care organizations is the reduction of medical errors. This study empirically examines the effect of leadership, organizational systems, and employee satisfaction with organizational support on medical error reduction. A set of hypotheses is tested based on data collected from 208 medical staff of hospitals with more than 300 beds in South Korea. Data were analyzed by confirmatory factor analysis and path analysis using SPSS 17.0 and Mplus 5.1. One of the major findings of this study was that medical error reduction could be achieved by effective leadership. Leadership and operational efficiency drive reduction in medical errors in the health care industry. The comparison between large- and small-sized quality assurance teams’ roles indicated that there was a significant difference in their effect on medical error reduction. The results of the study shed light on some practical implications for management professionals in hospitals.     

CEO Optimism and the Credibility of Open-Market Stock Repurchase Announcements

Given their low-cost and low level of commitment, open-market stock repurchase announcements are often viewed by the market with a degree of skepticism, leading to a weak initial market reaction followed by positive stock price drifts. The authors argue that the repurchase announcements made by optimistic CEOs should be more credible than those made by nonoptimistic CEOs. Our results show that optimistic CEOs are more likely to actually buy back their shares after the announcements and the abnormal returns following repurchase announcements are larger for optimistic CEOs. This evidence suggests that CEO optimism is an important factor that the market seems to overlook while evaluating the credibility of open-market repurchase announcements. Our main contribution is to link one of the most important managerial traits, optimism, to the open-market repurchases.     

Economic evaluation of rituximab in addition to standard of care chemotherapy for adult patients with acute lymphoblastic leukemia

Aims: Acute lymphoblastic leukemia (ALL) is an aggressive form of leukemia with a poor prognosis in adult patients. The addition of the monoclonal antibody rituximab to standard chemotherapy has been shown to improve survival in adults with ALL. However, it is unknown whether the addition of rituximab is cost-effective. The objective was to determine the economic impact of rituximab in addition to standard of care (SOC) chemotherapy vs SOC alone in newly-diagnosed Philadelphia chromosome-negative, CD20-positive, B-cell precursor ALL.

Methods: A decision analytic model was constructed, based upon the Canadian healthcare system. It included the following health states over a lifetime horizon (max ≈60 years): event-free survival (EFS), relapsed/resistant disease, cure, and death. SOC was either hyper-CVAD or the Dana Farber Cancer Institute (DFCI) ALL consortium. EFS, overall survival, and serious adverse event (SAE) rates were derived from a large randomized controlled trial. Costs of the model included: first-line treatment and administration, disease management, second-line and third-line treatment and administration, palliative care, and SAE-related treatments. Inputs were sourced from provincial and national public data, the literature, and cancer agency input.

Results: Quality-adjusted life-years (QALYs) increased by 2.20 QALYs with rituximab in addition to SOC. The resulting mean Incremental Cost-Effectiveness Ratio (ICER) was C$21,828/QALY. At a willingness-to-pay threshold of C$100,000/QALY, the probability of being cost-effective was 98%. Decision outcomes were robust to the probabilistic and deterministic sensitivity analyses, including the SOC backbone as either hyper-CVAD or DFCI.

Limitations: The results of this analysis are limited by generalizability of the chemotherapy backbone to Canadian practice.

Conclusions: For adults with ALL, rituximab in addition to SOC was found to be a cost-effective intervention, compared to SOC alone. The addition of rituximab is associated with increased life years and increased QALYs at a reasonable incremental cost.     

Collective Dynamics of Citizenship Behaviour: What Group Characteristics Promote Group‐Level Helping?

A basic tenet of research on organizational citizenship behaviour (OCB) is that OCB aggregated across individuals improves organizational performance. Departing from the typical focus on individual-level OCB, the construct of group-level OCB (GOCB) recently emerged as a critical group function that affects various group effectiveness measures. Despite the clear link between GOCB and team performance, the existing literature provides a limited understanding with regard to the antecedents of GOCB, mostly focusing on leadership variables. Establishing helping behaviour (a core dimension of OCB) as a collective construct, this study substantially expands the antecedents of group-level helping, and empirically tests their effects using three different operationalizations of group-level helping. The results, based on a sample of 96 work units, show that membership diversity in gender and education decreased group-level helping, whereas diversity in tenure increased it. Group-level helping was also positively related to leadership characteristics (supportive unit manager, transformational top management) and perceived competence of unit members. In addition, the analysis further indicated that perceived competence is a positive predictor of group-level helping only when the unit members also believe that others are trustworthy in terms of integrity and benevolent motivation. From a methodological standpoint, the study provides important insights by comparing different ways of operationalizing collective constructs.     

Acquisition of organizational capabilities and competitive advantage of IJVs in transition economies: The case of Vietnam

Using Vietnam as the context, the study empirically examines how the competitive advantage of international joint ventures (IJVs) in transition economies is affected by the acquisition of resources from foreign partners and of local market-based resources. Our study contributes to the nascent literature on IJVs in transition economies by producing several novel and interesting findings. First, it demonstrates the need to modify certain arguments of the resource-based view (RBV) when applied to IJVs in transition economies. This paper shows that the peculiar market characteristics of transition economies serve as an imitation barrier turning even property-based resources into sources of sustainable competitive advantage. Second, the positive impact of knowledge-based resources on the IJV’s competitiveness seems to be significantly enhanced as the ownership by the foreign parent increases. Lastly, competitive advantage of IJVs appears to be strengthened when the transfer of property-based resources is complemented by that of knowledge-based resources, and when the transfer of internal, firm-specific resources is complemented by that of external, market-based ones. We believe that these findings make significant, incremental theoretical and empirical contributions to both the RBV and IJV literatures.

TACTICAL ASSET ALLOCATION: CAN IT WORK?

Market events of the past ten years have sparked an interest in tactical asset allocation. In the current study we develop and test a model that incorporates currently available information into the tactical asset allocation process. The model provides an estimate of the probabilities that the upcoming market period will be bullish or bearish. Logit analysis is employed to determine which of the various timely and readily available data significantly affect these probabilities. These estimated probabilities are used to suggest the optimal allocations of funds over time between the risk-free asset and the market portfolio. Then, several timing strategies are compared with a buy-and-hold portfolio. An asset allocation strategy based on the probabilities assigned by the logit model appears to achieve greater terminal wealth with less variability of returns. Similar results are obtained for both an initial sample (1962–76 in our model) and a holdout sample (1977–88).     

Development, Present Status and Some Prospects of the Financial Markets in Korea

This paper describes the historical background and the present structure of Korea's financial markets to provide the basic understanding of issues facing the Korean financial system. The financial system in Korea has been introduced and developed to serve specific political or economic purposes, putting the financial markets in a tight control of government. As a result of the government-controlled financial policies market mechanism has oftentimes been ignored or distorted, making the Korean financial market inefficient and not competitive. To increase the efficiency of the financial system the Korean government plans to launch a Big Bang style financial reform. Attention is paid to the ongoing efforts of the Korean government for financial reforms. As the financial reform takes effect in the near future there will be far fewer regulations and government interventions in financial sector.     

Papua New Guinea's tax performance, 1965-77

The PNG Goverment increased its tax ratio from 6.6 to 15% over the period, 1965–1977. Estimates of the buoyancy and the elasticity of the major taxes are also high compared to those obtained for other less developed countries. There are significant differences between the tax bouyancy and the tax elasticity to show that considerable efforts were made to collect more tax revenue through discretionary fiscal policies. However, a possible weakness exists in these discretionary policies, in that the collection of more revenue was brought about mainly by raising the tax rates of the existing major taxes and little attention was paid to the search for new tax bases.