Shrinkage Estimation Strategies in Generalised Ridge Regression Models: Low/High-Dimension Regime

In this study, we suggest pretest and shrinkage methods based on the generalised ridge regression estimation that is suitable for both multicollinear and high-dimensional problems. We review and develop theoretical results for some of the shrinkage estimators. The relative performance of the shrinkage estimators to some penalty methods is compared and assessed by both simulation and real-data analysis. We show that the suggested methods can be accounted as good competitors to regularisation techniques, by means of a mean squared error of estimation and prediction error. A thorough comparison of pretest and shrinkage estimators based on the maximum likelihood method to the penalty methods. In this paper, we extend the comparison outlined in his work using the least squares method for the generalised ridge regression.     

Towards an integrated model for the transference of environmental responsibility

This research explores how environmental responsibility transfers to others. Although environmental responsibility is one of the most debated topics in environmental management literature, a framework describing how a teacher's environmental responsibility shapes the student's environmental responsibility is still lacking. Adopting emotional contagion theory as a lens, the paper addresses this issue via the mediation of emotional contagion and the moderation of a teacher's environmental concern. Based on a survey of teachers and students (N = 283) conducted in Pakistan, our findings provide evidence that a teacher's environmental responsibility can better transfer to students via emotional contagion. Additionally, our data establish that the transference of environmental responsibility from teachers to students via emotional contagion is more effective when the teacher has a high level of environmental concern than when he or she has a low level of environmental concern. Finally, the authors discuss the implications for policy in detail.     

Kernel method to estimate nonlinear structural equation models

Quality & Quantity - The purpose of this paper is to provide a nonparametric kernel method to estimate nonlinear structural equation models involving the functional effects between the latent...     

Quality of life and its predictors among Pakistani head of household in district Abbottabad,Pakistan

Quality & Quantity - This study aimed to measure the quality of life (QOL) and its predictors among male and female heads of household in Pakistan. A population-based cross-sectional study in...     

Remittances and incumbency: Theory and evidence

By raising household income, remittances lower the marginal utility of targeted electoral transfers, thus weakening the efficacy of vote buying. Yet, remittances make individuals wealthier and believe the national economy is performing well, which is positively attributed to the incumbent. Building on these insights, I show that the confluence of these divergent channels generate a surprising result that at increasingly higher levels of dissatisfaction with the incumbent, a remittance recipient is more likely to vote for the incumbent than a non‐remittance recipient. These predictions and their underlying mechanisms are substantiated across 18 Latin American countries.     

Market Risk Disclosures and Investment Efficiency: International Evidence from the Gulf Cooperation Council Financial Firms

This study examines the association between market risk disclosures (MRDs) and the investment efficiency of financial firms from six emerging markets in the Gulf Cooperation Council (GCC) region. Based on a sample of 553 firm‐year observations over the 2007–2011 period, we find that MRDs are significantly and negatively associated with both under‐investment and over‐investment and that this association is more pronounced for larger firms. We also find that the association between MRDs and under‐investment is moderated during periods of economic distress such as the Global Financial Crisis of 2008 and that the association between MRDs and over‐investment is magnified during periods of reduced financial distress. Our results are consistent with the idea that MRDs reduce information asymmetry, which ultimately improves investment efficiency. We contribute to the literature in an emerging market context by providing empirical evidence on the association between MRDs and investment efficiency across six emerging GCC capital markets. This study also fills a gap in the literature by providing evidence on the factors affecting the investment efficiency of financial firms.     

The demand for medical care services: evidence from Kuwait based on households’ out-of-pocket expenses

This article used a data set containing information on 1267 households from Kuwait to investigate the determinants of demand for medical care services by examining households’ out-of-pocket expenses. To deal with the problems associated with households’ health expenditure data, a two-part model (TPM) was estimated. Given Kuwait’s demographic composition, the model was estimated for full sample, nationals only and expatriates only. Prior to estimating the model, tests were conducted to select a transformation that reduces problems associated with heteroscedasticity and non-normality of the errors. In addition, tests were performed to determine if differences in the estimated coefficients across population groups were statistically significant.     

Implanting competitive strategy: A contingency approach

Competitive business strategies are often formulated with little regard given to the articulation format. This paper examines the strategy formulation process from a systems perspective and argues that articulation of a competitive strategy, such that sustained competitive advantage is created, requires consistency along the entire business chain. Internal consistency within the business chain is built through inter‐linkages. The inter‐linkages are made through four inter‐connective elements: human resources, technological resources, information resources and financial resources. It is argued in this paper that the human factor is of major importance since it integrates the other inter‐connective elements and therefore represents a key factor in the process of articulation and implementation. In view of the critical role of the human element in articulation of business strategy for competitive advantage, the paper develops a human‐factor related contingency framework. The developed contingency framework examines Porter's (1980, 1985) generic strategies with respect to congruent requisites necessary for building competitive advantage.     

25 years of Psychology & Marketing: a multidimensional review

The first issue of Psychology & Marketing was published in 1984. The journal was conceived as a forum for academics and practitioners in psychology, marketing, and related fields to engage in an exchange of scholarly information. The raison d'être of the journal was to bring psychologically sophisticated information and methodologies to bear on all aspects of marketing theory and practice. This review analyzes the performance of Psychology & Marketing from several perspectives, and includes data comparing its performance to the performance of other journals. Looking back over the last 25 years of its history, it seems fair to conclude that Psychology & Marketing has clearly delivered on its tacit promise of effectively building the knowledge base of marketing through psychology‐based insights. Looking forward, it seems reasonable to anticipate that the journal's well‐established track record in terms of diversity in the content, research design, and methodologies of its published articles will continue to stand as a welcome and refreshing distinction from other journals covering comparable domains of study. © 2009 Wiley Periodicals, Inc.