Why evolution does not always lead to an optimal signaling system

This paper gives a complete characterization of neutrally stable strategies for sender–receiver games in the style of Lewis, or Nowak and Krakauer [Lewis, D., 1969. Convention: A Philosophical Study. Harvard Univ. Press, Cambridge, MA; Nowak, M., Krakauer, D., 1999. The evolution of language. Proc. Nat. Acad. Sci. USA 96, 8028–8033]. Due to the dynamic implications of neutral stability, the replicator dynamics of this model does not necessarily lead to the rise of an optimal signaling system, where every state of the world is bijectively linked to one signal and vice versa, but it can be trapped in suboptimum situations where two (or more) signals are used for the same event, or two (or more) events are associated with one and the same signal.     

Effects of enforcement on illegal markets: Evidence from migrant smuggling along the southwestern border

The paper analyzes the effects of tighter border control on the illegal crossing market between Mexico and the United States. Combining panel data on illegal migrants with enforcement statistics, the effects of enforcement are found to be moderate: prices of border smugglers (‘coyotes’) increased by only 17%, while the demand for smugglers has remained unchanged. Enforcement has however shifted illegal migrants to remote crossing places. Border crossing is now more time-intensive with higher prices for coyotes and risk of death. This geographic substitution raised migration costs by $140, more than twice the effect of enforcement on smuggling prices.     

It Takes Three to Tango: Exploring the Interplay among Training Intensity,Job Autonomy,and Supervisor Support in Predicting Knowledge Sharing

This study explored whether the relationship between perceived training intensity and knowledge sharing is prone to combined moderating influences. We operationalized perceived training intensity as a challenge stressor, in accordance with the challenge‐hindrance framework of work stressors. The results of a study of 129 employees from three Norwegian service industries revealed a positive relationship between perceived training intensity and supervisor‐rated knowledge sharing for employees reporting high levels of perceived job autonomy and high levels of perceived supervisor support. In contrast, we found a negative relationship between perceived training intensity and supervisor‐rated knowledge sharing for employees reporting high levels of perceived job autonomy and low levels of perceived supervisor support. These findings suggest that supervisors are of vital importance in facilitating knowledge sharing among employees in settings where developmental challenges are prevalent and perceptions of job autonomy are high. Implications for future research and practice are also discussed. © 2014 Wiley Periodicals, Inc.     

Family life in grocery stores – a study of interaction between adults and children

Today the family is seen as a unit for food choice and consumption. The influence of family members on food choice comprises several stages that can be carried out both in the private home and in the public sphere, such as the grocery store. This makes the grocery store a context in which ordinary family life can be observed. The aim was to study families and the interaction between children and adults in the grocery store, focusing on young people's involvement in food shopping. Hidden observation and family interview methods were used. A total of 338 people were observed in seven different grocery stores in Stockholm during the summer and autumn of 2003. Seven family interviews, involving a total of 29 persons, were conducted in Uppsala in the spring of 2003. In the interviews, parents reported avoiding shopping for food together with children as they experienced it as stressful and exhausting. The observations showed that family life in the grocery store comprises not only the food purchase, but also bringing up children and consumer education. Young people's involvement in the food purchase varied depending on their age and the specific product. The different behaviour observed may be interpreted as reflecting the variation in ways of bringing up children at home. Another conclusion is that a public place such the grocery store facilitates pedagogical situations and can work as a tool for informal education.     

When hubs forget,lie, and play favorites: Interpersonal network structure,information distortion,and organizational learning

The interpersonal network structure of an organization directly influences the diffusion and recombination of ideas and can thus facilitate or impede organizational learning. Most interpersonal networks have ‘hubs’—individuals who have significantly more connections than does the average member. This raises important questions about how hubs influence organizational learning outcomes. Does the presence of hubs improve or impair performance? What happens if hubs forget or misrepresent information that is transmitted through the network? Using simulation models, we find that moderately hubby networks outperform both very hubby and democratic networks. We also find that moderate amounts of information omission or misrepresentation can be surprisingly beneficial to performance, though the patterns of their effects are strikingly different. Copyright © 2013 John Wiley & Sons, Ltd.     

When bad news is sugarcoated: Information distortion,organizational search and the behavioral theory of the firm

Most work in strategy and organization theory assumes that performance feedback is straightforward to interpret and truthfully reported. We raise the following question: How might the systematic distortion of negative performance information affect organizational learning and future performance? We formulate a model where (1) members do not always report the truth about what they know about their performance level, especially when performance is below aspiration and (2) their propensity to distort information is subject to social influence. We find that organizations that are characterized by a high level of information distortion tend to perform more poorly but that the effect of a low rate of sugarcoating may, in some conditions, be more benign than the literatures seem to suggest. Copyright © 2013 John Wiley & Sons, Ltd.     

The Development of the Economy of Taiwan

The development of the Taiwanese economy over the past five decades was manifested in rapid growth, export expansion, stable prices, full employment, and relatively equitable income distribution. In this development, the government has played an important role. This paper sets out to report the important features of the Taiwanese economy during the post-war period to 1998, and to examine the policies which crucially contributed to its successful development.     

Using self-referencing to explain the effectiveness of ethnic minority models in advertising

Advertising research has generally not gone beyond offering support for a positive effect where ethnic models in advertising are viewed by consumers of the same ethnicity. This study offers an explanation behind this phenomenon that can be useful to marketers using self-reference theory. Our experiment reveals a strong self-referencing effect for ethnic minority individuals. Specifically, Asian subjects (the ethnic minority group) self-referenced ads with Asian models more than white subjects (the ethnic majority group). However, this result was not evident for white subjects. Implications for academics and advertisers are discussed.     

Retailer Advertising and Retail Competition in the UK

Radical changes have occurred in distribution in the UK over the past three decades. These structural changes have stimulated most retailers to increase their real advertising expenditure. The author analyses the main factors that have brought about the growing intensity of retail advertising as a form of non-price competition.