ASYMPTOTICS OF IMPLIED VOLATILITY IN LOCAL VOLATILITY MODELS

Using an expansion of the transition density function of a one‐dimensional time inhomogeneous diffusion, we obtain the first‐ and second‐order terms in the short time asymptotics of European call option prices. The method described can be generalized to any order. We then use these option prices approximations to calculate the first‐ and second‐order deviation of the implied volatility from its leading value and obtain approximations which we numerically demonstrate to be highly accurate.     

The Effect of Scarcity on the Purchase Intentions of Prevention and Promotion Motivated Consumers

This study investigates the influence of consumers’ motivational orientations (“prevention” vs. “promotion”) on their susceptibility to demand‐based versus supply‐based scarcity, measured by purchase intention scores. Prevention‐focused participants were more inclined to adopt a product when it was perceived to be demand‐scarce rather than supply‐scarce, while those who were identified as promotion‐focused responded positively to scarcity attributed to supply shortfall. In addition, products that could be associated with a prevention motive enhanced purchase intentions when presented as demand‐scarce but not if perceived to be supply‐scarce; conversely, products associated with the promotion motive scored better if the scarcity was seen to be supply‐generated rather than demand‐generated. Lastly, messages focused on prevention were more effective than those focused on promotion in the case of perceived demand scarcity, whereas the converse holds true for supply scarcity. These findings highlight the importance of understanding the motivational differences underlying the effectiveness of scarcity appeals. They furthermore suggest the strategic implication that improved intention to purchase occurs when the regulatory focus evoked by a scarcity‐related message is compatible with the appeal it communicates.     

Financial Sector Volatility,Banking Market Structure and Exports

This paper assesses the impacts of financial sector volatility and banking market structure on industrial exports. By utilising the specification of Rajan and Zingales (American Economic Review 1998; 88 , 559) on the cross‐country, cross‐industry data from Manova (Journal of International Economics 2008; 76 , 33), we find that financial sector volatility, measured as the standard deviation of the growth of private credit, and banking market structure, measured as the share of the three largest banks’ assets in a country, respectively exert significantly negative and positive impacts on industrial exports, particularly for those industries that are more externally financially dependent. The findings are robust to a variety of kinds of sensitivity analysis and thus lend support to the notion that a more stable and concentrated banking system is important to the exports of those industries that rely more on external finance.     

How Focused are the World’s Top-Rated Business Schools on Educating Women for Global Management?

Persuaded by the observed positive link between the flow of appropriately skilled and trained female talent and female presence at the upper echelons of management (Plitch, Dow Jones Newswire February 9, 2005), this study has examined current trends on women’s uptake of graduate and executive education programs in the world’s top 100 business schools and explored the extent to which these business schools promote female studentship and career advancement. It contributes by providing pioneering research insight, albeit at an exploratory level, into the emerging best practice on this important aspect of business school behavior, an area which is bound to become increasingly appreciated as more global economic actors wise up to the significant diseconomies inherent in the under-utilization of female talent, particularly in the developing world. Among the study’s main findings are that female graduate students averaged 30% in the sample business schools, a figure not achieved by a majority of the elite schools, including some of the highest ranked. Only 10% of these business schools have a specialist center for developing women business leaders, and only a third offered women-focused programs or executive education courses, including flextime options. A higher, and increasing, percentage of business schools, however, reported offering fellowships, scholarships or bursaries to prospective female students, and having affiliations with pro-women external organizations and networks that typically facilitate career-promoting on-campus events and activities. The implications of the foregoing are discussed, replete with a call on key stakeholder groups to more actively embrace the challenge of improving the supply of appropriately trained female talent, or top management prospects. Future research ideas are also suggested.     

A Basket-mix Model to Identify Cherry-picked Brands

Extreme cherry pickers, those shoppers who visit a target retailer infrequently and buy only a few promoted items when they do visit, reduce that retailer's profitability. If the retailer could identify a particular brand that draws extreme cherry pickers, the retailer could use that information when negotiating with the brand's manufacturer to obtain wholesale promotional support that compensates the retailer for extreme-cherry-picker-related losses. Researchers have been successful in developing methods to identify those shoppers who are extreme cherry pickers, but they have been less successful in developing methods that identify the brands’ that draw extreme cherry pickers. In this paper, we present a method that can determine whether a brand, when promoted, draws extreme cherry pickers.     

The judicious use and management of humor in the workplace

Everybody loves humor. In the workplace, it can provide such benefits as stress relief, team unification, employee motivation, idea generation, and frustration diffusion through venting. Despite these positives, it should be stressed that humor in this context has downsides, as well. For example, humor can distract us from the job at hand, hurt our credibility, or cause offense in increasingly diverse work settings. In the midst of this complicated situation stand managers, who occupy a position of responsibility for both the good and bad effects of humor in the workplace. It is the intention of this article to use existing humor theory and a simple model to generate a more analytical understanding of humorous interaction. Suggestions are then offered as to how to use humor and manage the use of humor in such a way as to maximize its benefits, while minimizing its dangers.     

Comment

A Comment on “Marketing Planning and Corporate Culture: A Conceptual Framework Which Examines Management Attitudes in the Context of Marketing Planning” by John W. Leppard and Malcolm H. B. McDonald.     

Price transmission and volatility spillovers in Asian rice markets: Evidence from MGARCH and panel GARCH models

ABSTRACT

This article examines world rice price transmission and volatility spillovers across six major Asian rice markets over the period 2005-13. In addition to the conventional GARCH models, we use a panel GARCH framework to estimate the spillover effects along with the consideration of heterogeneity and interdependence among countries. Empirical results suggest that changes in the world rice price affected not only the price levels of domestic rice markets but also their conditional variances. Moreover, interdependence across rice markets contributed to a strong spillover of a price shock in one country to another within the region.     

Too Popular to Ignore: The Influence of Online Reviews on Purchase Intentions of Search and Experience Products

Consumers assess the credibility of online product reviews to guide their purchase decisions. However, little is known about how consumers determine the credibility of online product reviews. This article examines the effect of the level of detail in a product review and the level of reviewer agreement with it on the credibility of a review and consumers' purchase intentions for search and experience products. Overall, the results indicate that more credible reviews lead to higher purchase intentions. Interestingly, the findings also demonstrate that consumers determine the credibility of a review differently for search and experience products. For search products, consumers deem online reviews to be more credible when the reviews contain detailed information about the product. However, for experience products, consumers determine the credibility of a review by assessing the level of reviewer agreement with a review. The lack of diagnosticity of detailed information in online reviews of experience products is attributed to the idiosyncratic nature of experiences. Implications for research and practice are discussed.