Do security breaches matter? The shareholder puzzle

This article analyzes the effect of computer breaches on publicly traded equities from 2005 to 2017. An event study is performed and breaches analyzed conditioned on whether the breach announcement has been made in the mainstream media or through other channels. We find that in the period prior to the announcement date in the media, the mean abnormal return is negative, reflecting a likely leakage of information. In the period following the announcement date, the mean abnormal return is positive, often more than offsetting the previous declines. The findings have important implications for analysts, portfolio managers, institutional investors, and regulators.     

Store environment,emotions and approach behaviour: applying environmental aesthetics to retailing

This exploratory study examines the influence of store environment on emotions and behaviour tendencies. The study brings insights from research on external environments to the study of store environment. We combined the idea of three distinct dimensions of emotions (pleasantness, arousal and dominance) and the role of mediating approach-avoidance behaviours with two variables taken from the field of environmental aesthetics – complexity and order. Twenty-four colour photographs of four sections of two grocery stores were rated by a sample of 43 subjects on their degree of complexity and order. A second sample of 87 subjects rated the same photographs on emotions and approach-avoidance tendencies. The relationship between complexity and order and reported pleasantness and arousal was consistent with findings regarding external environments. The three emotional dimensions mediated an inverted ‘U’ relationship between complexity and approach behaviour tendencies, as expected. Order had a positive correlation with approach behaviour tendencies. The study suggests the importance of examining general variables (such as complexity and order) in the context of retail environments and provides ideas for extensive research.     

Absolute approximations to equilibrium in markets with non-convex preferences

It is by now a well-known result that non-convexity can be ‘cured’ in large markets. There exist approximations to core allocations and competitive equilibria, in these approximations the excess demand is made small relative to the size of the economy. This work is concerned with absolute approximations, that is, making the excess demand itself arbitrarily small.     

When marketing and innovation interact: The case of born-global firms

Previous research on born-global firms (BGs) has emphasized their strong dependency on establishing a competitive positioning from the early days of their existence. While many researchers emphasized BGs’ innovativeness as a driver of their competitiveness, the capabilities underlying BGs’ innovativeness are still under-researched, specifically, marketing, and innovation-related capabilities. Based on a preliminary stage of in-depth interviews with senior managers, we identified three capabilities, market intelligence generation, marketing adaptability, and team cohesion, that underscore the interaction between innovation and marketing. We then performed a SEM analysis based on data collected from 127 BGs. Our findings indicate that marketing intelligence and team cohesion directly and positively impact BGs’ innovativeness. Marketing adaptability was found to be moderated by environmental conditions—economic development and technological development. When economic development is high, salesforce adaptability enhances BGs’ innovativeness, while product adaptability or communication adaptability decreases BGs’ innovativeness. When technological development is high, product adaptability enhances BGs’ innovativeness, while salesforce adaptability decreases BGs’ innovativeness.     

Dynamic Influences on Individual Choice Behavior

Research examining the process of individual decision making over time isbriefly reviewed. We focus on two major areas of work in choice dynamics:research that has examined how current choices are influenced by the historyof previous choices, and newer work examining how choices may be made toexploit expectations about options available in the future. A central themeof the survey is that if a general understanding of choice dynamics is toemerge, it will come through the development of boundedly-rational models ofdynamic problem solving that lie on the interface between economics andpsychology.     

Credible Equilibria in Games with Utilities Changing during the Play

Whenever one deals with an interactive decision situation of long duration, one has to take into account that priorities of the participants may change during the conflict. In this paper we propose an extensive-form game model to handle such situations and suggest and study a solution concept, called credible equilibrium, which generalizes the concept of Nash equilibrium. We also discuss possible variants to this concept and applications of the model to other types of games. American Mathematical Society Classification Numbers: 90A06, 90A07, 90A43, 90A56, 90D06, 90D10, 90D35, 90D40, 90D80. Journal of Economic Literature Classification Numbers: C70, C72, D10, D11, D80, D83.