Beware of averages!

Summary Let X₁,.,., X_m, and Y₁, Y_n, be two independent samples from the same distribution and let X and Y be the means of these samples. What is the maximal value of P(X < Y)?     

Dissociating explicit and implicit effects of cross-media advertising

Knowledge of cross-media advertising effects is mainly based on explicit psychological measures, such as self-reports. To fully understand the mechanisms responsible for the success of cross-media advertising, it is important to also use implicit measures. We used both types of measures to assess whether exposure to different media combinations affects the cognitive and evaluative impact of advertising. Results show that participants performed better on all explicit and implicit measures of memory and brand preference after exposure (versus no exposure) to target ads, which validated the use of these measures. Comparison of cross-media versus single medium exposure showed differences on the explicit level, but not on the implicit level. This suggests (1) that cross-media advantages may be driven by explicit rather than implicit memory mechanisms, and (2) that implicit advertising effects may require more drastic manipulations than context changes, such as varying the combination of media used for exposure to advertising.     

The role of customization,brand trust,and privacy concerns in advergaming

This study investigates the effects of advergame customization features and trust in the brand advertised in the advergame on players’ brand attitude and personal information disclosure. Moreover, we examine to what extent players’ privacy concerns moderate these effects. Drawing on self-determination theory and uncertainty reduction theory, we developed and tested a game with varying levels of customization features and brand trust. Results show that customization possibilities and brand trust may have a positive influence on advergame persuasion outcomes, but this influence is strongly conditioned by consumers’ privacy concerns. When privacy concerns are low, a game containing customization features leads to a more positive brand attitude. However, when privacy concerns are high, the effect becomes negative. Additionally, we find that different levels of privacy concerns do not affect players’ responses toward high trust brands, but toward low trust brands. For low trust brands, players with high privacy concerns show more negative game responses than players with low concerns. These findings set the boundaries for several theoretical and practical implications regarding advergame effectiveness.     

Novel naval technologies: Sustaining or disrupting naval doctrine

The defense sector is generally known to be simultaneously conservative and enthusiastic about novel technologies. Uptake of new technologies by the military may differ depending on the perceived impact of new technologies. Introduction of technological changes can sustain or disrupt doctrine and (promoters of) new technologies may be met with less or more resistance respectively. We analyzed dynamics in naval innovation cases to investigate how different types of technological change became associated with either sustaining or disruptive doctrinal innovations. In order to analyze dynamics in the cases, an analytical framework was developed which highlighted a set of factors shaping naval innovation processes.     

Strategic planning: valuing and managing portfolios of real options

This article presents a value-based strategic planning framework suitable for valuing and managing portfolios of corporate real options. The proposed framework combines insights from strategic management theory with novel quantitative valuation tools from finance. Strategic planning is viewed as a process of actively developing and managing portfolios of corporate real options in the context of competitive interactions. As such, the expanded valuation framework recognizes that future growth opportunity value deriving from the firm's resources and capabilities must explicitly account for uncertainty, adaptability, and competitive responsiveness. The resulting expanded valuation framework is able to capture the value of the adaptive resources and capabilities that enable a firm to adapt and re-deploy assets, develop and exploit synergies, and gain competitive advantage via time-to-market and first- or second-mover advantages. We show how two basic metrics in this value-based framework, current profitability of assets in place and future growth option value, can be obtained from financial market data and how they can be used in active portfolio planning.     

Asking and answering yes/no-questions in survey interviews: a conversational approach

The authors discuss the process of asking and answering yes/no-questions in personal survey interviews from a conversational perspective. They examine the process with regard to yes/no-questions as given in the questionnaire and with regard to the yes/no-questions that interviewers may pose in the subsequent stages of a sequence, when they are probing on the respondent's initial answer or are trying to solve other problems. Hypotheses are derived from the co-operation principle and the politeness principle of conversation, and then empirically evaluated for survey interview settings. In the relatively informal stages of the answering process (subsequences) the conversations appear to go quite well according to the conversation rules, but in the beginning formal stage to a much lesser degree. In particular it has been observed that interviewers strongly prefer to ask one-sided positive yes/no-questions in the subsequences, and, secondly, that respondents usually give agreeing answers to these yes/no-questions. It is argued that this “normal” conversation strategy may seriously affect the validity of the information obtained, and, more generally, that the practical demands from the conversation rules on the interviewer's behaviour set limits on the researcher's abstract demands on that behaviour.

     

On divergence and convergence of sums of nonnegative random variables

Abstract  If X ₁, X ₂,… are exponentially distributed random variables thenσ^∞_{k= 1} X_k=∞ with probability 1 iff σ^∞_{k= 1} EX_k=∞. This result, which is basic for a criterion in the theory of Markov jump processes for ruling out explosions (infinitely many transitions within a finite time) is usually proved under the assumption of independence (see FREEDMAN (1971), p. 153–154 or BREI-MAN (1968), p. 337–338), but is shown in this note to hold without any assumption on the joint distribution. More generally, it is investigated when sums of nonnegative random variables with given marginal distributions converge or diverge whatever are their joint distributions.     

Constraints on the conversion to sustainable production: the case of the Dutch potato chain

The question of how to make agriculture more sustainable is a timely topic. This paper examines the Dutch potato supply chain in the context of its surrounding network. Based on the chain network approach it identifies constraints on conversion to organic potato production from a business administration and a public administration perspective. Two obvious constraints are the demand for ecologically produced products and the problem of cultivating potatoes. However, the potential for conversion is also affected by the way the market and the supply chain are structured, by the coordination of activities, efficiency‐driven actors, relations and interdependencies between actors and by the asymmetrical distribution of power. Furthermore, conversion is constrained by the limited influence of network parties such as NGOs and current government policies. Based on the analysis, the paper questions whether the ecological approach (organic farming) will be more effective than strengthening a more generic approach stimulating the sustainability of the sector. Copyright © 2006 John Wiley & Sons, Ltd and ERP Environment.     

It's no longer mine: the role of brand ownership and advertising in cross-border brand acquisitions

Although cross-border brand acquisitions are increasingly common in the global marketplace, research on how consumers respond to them is limited. Building on social identity and psychological ownership theories, we introduce the concept of brand ownership to the advertising literature, and show its negative effects on consumer reactions to a brand acquisition. Furthermore, we demonstrate that consumers’ disidentification (i.e., an oppositional motivation) with an acquiring country moderates the negative effect of consumers’ brand ownership on consumer attitudes after a brand acquisition. The results reveal that consumers with high levels of brand ownership develop more negative post-acquisition brand attitudes when a brand is acquired by a country with which consumers strongly disidentify (i.e. dissociative vs. out-group). Furthermore, our research introduces the concept of a brand ownership appeal in advertising, and demonstrates that it is an effective advertising strategy in enhancing post-acquisition brand attitudes for consumers with high levels of brand ownership. Important theoretical and managerial advertising implications conclude this research.