Word-of-mouth communications in marketing: a meta-analytic review of the antecedents and moderators

Although word-of-mouth (WOM) activity has been studied as an outcome variable of other constructs such as satisfaction, less attention has been given to the antecedents and moderators of WOM when considering WOM as a central construct. Hence, we propose a model of WOM antecedents and moderators using a meta-analytic review. The results show that all antecedents have significant effects on WOM activity, with customer commitment showing the strongest effect. The following hypotheses are also supported: (1) WOM valence is a significant moderator, (2) cross-sectional studies show a stronger influence of satisfaction and loyalty on WOM activity than longitudinal studies, and (3) studies of WOM behavior show a weaker link between loyalty and WOM activity than studies of WOM intentions. In addition, we show that satisfaction has a stronger relationship with positive WOM than loyalty, whereas (dis)loyalty has a stronger relationship with negative WOM than does (dis)satisfaction. We discuss this finding based on the different natures of positive and negative WOM. This article is based on the first author’s dissertation.     

The experience of technological collaborations by MERCOSUR companies

This paper examines some of the experiences in information and knowledge sharing involving MERCOSUR firm. It finds that while technological collaborations by MERCOSUR firms are relatively few, located in low-tech sectors and taking place in an environment of little innovation, they are motivated by the need to ‘fuse’ their own knowledge with that of partner or to improve available information. Modes of governance vary accordingly, with equity or contractual forms being used for new developments and informal agreements for improvements. Govmments and business associations can be important facilitators of technological collaborations. The analysis of technological collaborations suggested that the better prepared a corporation entered an agreement the more successful it was likely to be. It also pointed out that where interactions were intense, well intended and transparent, included personnel exchanges, were properly assessed and involved receptive participants, learning progressed smoothly and partners were satisfied. Benefits of the collaborations included new patentable and non-patentable products new factories, as well as building trust between partners. Premature termination of some collaborations was the result of financia1 limitations unrelated to the success of the collaboration.     

Cross-cultural analysis of the global mindset and the internationalization behavior of small firms

This research analyzes the influence of a global mindset on the internationalization behavior of Norwegian and Portuguese small firms. It specifically sets out to assess the role of global orientation of the entrepreneur and firm perspectives on the global market. Based on a sample of 354 small firms, we used structural equation modeling to conduct our analysis. The results show the differing importance of a range of factors in explaining global mindset in different contexts. The global mindset of Norwegian entrepreneurs conditions their behavior and international experience, while for Portuguese entrepreneurs it affects the cognitive domain and their technical expertise. Global mindset and global orientation have more relevant effects on the internationalization behavior of Norwegian firms than that of Portuguese firms.     

Geometric Asian options: valuation and calibration with stochastic volatility

The scaling properties of two alternative fractal models recently proposed to characterize the dynamics of stock market prices are compared. The former is the Multifractal Model of Asset Return (MMAR) introduced in 1997 by Mandelbrot, Calvet and Fisher in three companion papers. The latter is the multifractional Brownian motion (mBm), defined in 1995 by Péltier and Lévy Véhel as an extension of the very well-known fractional Brownian motion (fBm).

We argue that, when fitted on financial time series, the partition function as well as the scaling function of the mBm, i.e. of a generally non-multifractal process, behave as those of a genuine multifractal process. The analysis, which concerns the daily closing prices of eight major stock indexes, suggests to evaluate prudently the recent findings about the multifractal behaviour in finance and economics.     

Franchisee-based brand equity and performance

This study focuses on the perceptions of franchisees and analyzes the influence of brand equity on franchisee performance. The factors that constitute brand equity are also assessed. Factor analysis was used to generate valid and reliable scales based on a sample of 205 Portuguese franchisee firms, and structural equation modeling methodology was then employed in the analysis. The results show franchisee-based brand equity (FBBE) to be a multivariate factor with strong influence on performance. This study contributes significantly to the literature by showing the perspective of franchisees toward franchising. It also has implications on the adequacy of corporate strategy in achieving performance.     

Rent-seeking in an emerging market: A DSGE approach

Due to the fact that rent-seeking is by definition an unobservable variable, measuring its size and evolution over the business cycle can be a daunting challenge. In this article, by embedding rent-seeking behavior in an otherwise standard open-economy DSGE model, we are able to derive a quarterly time series of this variable (expressed as a percentage deviation from the trend) for an emerging economy such as Brazil. The estimated series, spanning the period 2002Q1?2017Q4, shows a strong positive correlation with the “Commodity Super Cycle” of the 2000 decade and falls as a result of some political scandals and their ensuing investigations, among other driving forces. We also rely on the same model to assess how several shocks hitting the economy affect both rent-seeking and the relevant macroeconomic variables in our model. Barring monetary expansions, increased exports and higher income transfers to households, expansionary shocks are associated with lower rent-seeking activity. Factoring in these two sets of results, the upshot is that rent-seeking behavior shows a pattern of procyclicality in the Brazilian economy.     

Portfolio management with tail dependence

Many publications, that treated with Portfolio Management, were devastating for all asset allocation models in the context of portfolios. The elimination of extreme events (asymmetric or tail dependence) during the portfolio construction process can reduce the skills of asset managers to reduce risk through diversification. The copula theory allows us to calculate an alternative to measure the dependence of extreme events in assets through the index lower tail dependence. We check that the strategies with tail dependence overcame Talmud rule, the Markowitz model and the model of Tu and Zhou by simulating 1,000 portfolios with 3, 5, 10 and 20 randomly selected assets from DJIA for the period 03/1990 until 12/2016. We conclude that models of tail dependence and Markowitz had more performance ex-ante than Talmud and the Tu and Zhou model for portfolios with 3, 5, 10 and 20 assets. Tail dependence models overcome Markowitz, in terms of cumulative return, in over 60% of months considered in the analysis. The results indicate that the Talmud rule should be discarded in a context of constructing portfolios with individual stocks ahead strategies with tail dependence.     

From customer motivation to corporate performance. The role of strategic factors and distribution channels of financial service firms

This research analyzes the relationship between strategic factors and distribution channels and the performance of financial service firms, based on the theory of distribution channels and the resource-based view. Using structural equation modeling, the study examines a sample of 252 insurance firms operating in the Iberian Peninsula. The empirical analysis provides conclusive evidence that strategic factors have an influence on the firm’s distribution channels and performance. It also confirms that internal and external determinant factors as well as customer motivation have an influence on strategic factors.     

Socioeconomic modeling: Selecting an appropriate strategy

The simulation strategies of econometrics, system dynamics, and cross-impact analysis have been alternately offered to policymakers over the years. The fact that proponents have tended to glorify their own model's merits and devalue the others has led to confusion and difficulties in making an objective, well-guided selection among them. This paper attempts to cut through the jungle of arguments and counterarguments and to reduce them to their essential elements. The paper then demonstrates that each model presents a unique version of a problem and that these versions are not necessarily competitive. Finally, a guide to modeling selection for policymakers is developed.