Testing for Unit Root Against Stationarity Using the Likelihood Ratio Test

In a first-order autoregressive model with drift, we derive the likelihood ratio test for a unit root against the stationary alternative. We also derive the test in a state space model with trend. Finite sample and asymptotic critical values are obtained by Monte Carlo simulations. A simulation study investigates the power performance of the likelihood ratio test and we also examine how a bias correction of the test affects the results.     

Communication after an integrity-based trust violation: How organizational account giving affects trust

How can an organization repair trust through communication after an ethical failure? This study examines how trust is repaired after an integrity-based trust violation using three different accounts: apology, excuse, and refusal. In our approach, we rely on two strands of attribution theory, which suggests that different attributions for responsibility and credibility affect trust. An experiment with n = 368 was conducted to explore trust repair effectiveness of apology versus refusal and apology versus excuse after an integrity-based trust violation. Results revealed apology as a double-edged sword; it repairs trust more successfully than refusal and excuse because it is evaluated as more credible. However, it is less successful than refusal and excuse because it is evaluated as more responsible.     

Posing the Question: Visitor Posing as Embodied Interpretation in an Art Museum

This article identifies and explores posing by visitors to an art gallery as a unique meaning making activity. Conducted as a design experiment in partnership with a national art museum, this study builds on theoretical perspectives related to gesture and embodiment. Empirical findings suggest that particular posing activities function simultaneously to mediate internally and externally oriented processes of interpretation in encounters with art. Accordingly, these complex posing practices may be viewed as an integrated part of visitors’ meaning making experiences. Implications for this research include expanding our understanding of the roles of the body in visitor’s museum experiences.     

A flexible model for the pricing of perishable assets

We present a flexible and versatile model which addresses the problem of assigning optimal prices to assets whose value becomes zero after a fixed expiry date. (Such assets include the important example of seats on airline flights.) Our model is broad in scope, in particular encompassing the ability to deal with arrivals of customers in groups. It is highly adaptable and can be adjusted to deal with a very extensive set of circumstances.Our approach to the problem is based on elementary and intuitively appealing ideas. We model the arrival of customers (or groups of customers) according to an inhomogeneous Poisson process. We incorporate into the model time dependent price sensitivity (which may also be described as “time dependent elasticity of demand”). In this setting the solution to the asset pricing problem is achieved by setting up coupled systems of differential equations which are readily amenable to numerical solution via (for instance) a vectorised Runge-Kutta procedure. An attractive feature of our approach is that it unifies the treatment of discrete and continuous prices for the assets.     

Relative Deprivation and Intergroup Prejudice

Using three diverse European surveys, we test the relationship between relative deprivation (RD) and anti-immigrant prejudice. We find that both group relative deprivation (GRD) and individual relative deprivation (IRD) are found primarily among working-class respondents who are politically alienated. We also find that GRD, but not IRD, serves as a proximal correlate of prejudice. IRD's effects on prejudice are largely mediated through GRD. In addition, GRD partially mediates the effects of such distal predictors of prejudice as education and family income. Finally, blaming the victim mediates in part the GRD link with prejudice. These results lead to a socially situated path model of RD's effects on prejudice with public policy implications.     

Leadership behaviour and leader self-reported well-being: A review,integration and meta-analytic examination

ABSTRACT

While the link between leadership and follower well-being is well established, less is known about the relation between leaders’ leadership behaviour and their own well-being. Particularly, a systematic integration of existing studies is missing. Based on an integrated framework summarising major theories on the leader well-being–leadership link, we quantitatively synthesised findings on the relations between different leadership behaviours and leader well-being indicators. The meta-analytical results (95 effect sizes; N?=?12,617) confirmed significant relationships of constructive and destructive leadership with leader well-being in the expected directions. Relative weight analyses on the constructive leadership behaviours showed that change-oriented and relational-oriented leadership (e.g. transformational, participative) accounted for more variance in leader well-being than task-oriented leadership (e.g. transactional). Regarding destructive leadership, active destructive leadership (e.g. abusive supervision) showed stronger negative associations with leader well-being than passive leadership (e.g. laissez-faire). Based on our integrated framework, we proposed and found support for divergent patterns of associations for different forms of well-being (positive vs. negative, short-term vs. long-term, job-related vs. general). Our study demonstrates a considerable linkage between leader well-being and leadership, supporting the adoption of leadership development programmes and organisational health interventions for leaders given their impact on employees, teams and organisations.     

Outsiders and Intrapreneurs: The Institutional Embeddedness of Social Entrepreneurship in Germany

The social entrepreneurship discourse in Germany has become more prominent at a time when the deeply rooted corporatist traditions of social provision have come under pressure for marketization. This article examines the potential role of “social entrepreneurs” in the institutionally established German welfare state. The article analyzes the opportunities and constraints that new players face. Drawing on survey data and case studies in the areas of elderly care and advancement of children with immigrant background, the analysis retraces the structure and diffusion of social entrepreneurial projects. It concludes that the simple transfer of the social entrepreneurship model is unlikely. The analysis suggests that successful social ventures in Germany adapt the notion of social entrepreneurship to prevalent institutional realities. In the context of more encompassing social services, dense decentralized networks, and different cultures of philanthropism, new players have a complementary role that stimulates rather than dominates the process of social innovation.     

The allocation and value of time assigned to housework and child-care: An analysis for Switzerland

In this paper, data from the 1997 Swiss Labour Force Survey are used to analyse the allocation and value of time assigned to housework and child-care. It is shown that men's allocation of time to housework and child-care is largely invariant to changes in socio-economic factors. Women's allocation of time to housework and child-care, on the other hand, is shown to depend on several social, economic, and demographic factors. The value of time assigned to housework and child-care is calculated with two market replacement cost methods and three opportunity cost methods. The results show that the value of time assigned to housework and child-care ranges from 27% to 39% and from 5% to 8% of GDP (in 1997), respectively. The value of time assigned to housework and child-care is also calculated for different household structures. Received: 15 April 1999/Accepted: 5 May 2000