Migration to European Countries: A Structural Explanation of Patterns, 1980–20041

Various theoretical approaches have provided us with insights to explain the pattern of migration flows. Economic theory considers migration to be a reaction to labor market and economic incentives. Cultural theories predict that migration flows will occur according to a center‐periphery pattern, while social network analysis assumes that migrants follow already established migration networks. We test these three approaches simultaneously, using OECD and Eurostat data on the migrant inflow into the European countries between 1980 and 2004. The analysis demonstrates that migration flows react to economic incentives, mainly with regard to the labor market, but also to cultural and colonial linkages. There is no indication that the importance of the colonial past is declining over time. The response of migration patterns to shortages in the labor market is shown to be highly efficient, while the analysis shows that immigrants are not attracted by high levels of social expenditure.     

In Search of the Sources of Psychologically Controlling Parenting: The Role of Parental Separation Anxiety and Parental Maladaptive Perfectionism

This study investigated the role of two dimensions of parental separation anxiety—Anxiety about Adolescent Distancing (AAD) and Comfort with Secure Base Role (CSBR)—and parental maladaptive perfectionism in the prediction of psychologically controlling parenting. In a sample of middle adolescents and their parents (N=677), it was found that parents' AAD scores and maladaptive perfectionism were positively related to psychological control, whereas parents' CSBR scores were negatively related to psychological control. Further, psychological control served as an intervening variable in the links between parent characteristics and adolescent well‐being. These findings suggest that two qualitatively different types of psychological control may exist: one originating from parents' separation anxiety and another originating from parents' maladaptive perfectionist standards.     

COLLUSION IN PROCUREMENT AUCTIONS: AN EXPERIMENTAL EXAMINATION

Experimental methods are used to examine the existence and detectability of collusion in environments that exhibit critical parallels to procurement auctions. We find that given the opportunity sellers often raise prices considerably. Moreover, noncollusive Nash equilibrium predictions are insufficient to dismiss "suspicious" behavior as innocuous: in an environment where identical prices are predicted in a noncollusive Nash equilibrium, common prices are observed only when sellers communicate. In a second environment designed to parallel construction procurement contracting, market rotations are observed both with and without collusion, but collusion can often be detected from the pattern of losing bids.     

On the effect of the number of quadrature points in a logistic random effects model: an example

Although generalized linear mixed models are recognized to be of major practical importance, it is also known that they can be computationally demanding. The problem is the evaluation of the integral in calculating the marginalized likelihood. The straightforward method is based on the Gauss–Hermite technique, based on Gaussian quadrature points. Another approach is provided by the class of penalized quasi-likelihood methods. It is commonly believed that the Gauss–Hermite method works relatively well in simple situations but fails in more complicated structures. However, we present here a strikingly simple example of a logistic random-intercepts model in the context of a longitudinal clinical trial where the method gives valid results only for a high number of quadrature points ( Q ). As a consequence, this result warns the practitioner to examine routinely the dependence of the results on Q . The adaptive Gaussian quadrature, as implemented in the new SAS procedure NLMIXED, offered the solution to our problem. However, even the adaptive version of Gaussian quadrature needs careful handling to ensure convergence.     

Investigating a long tail in retail vehicle sales

The concept of the long tail in demand distributions has generated significant research interest because of its potential importance for producers, distributors and retailers. Studies to date have focused on information goods sold through internet channels. Here we study long tail effects in vehicle sales sold through conventional car dealerships. The willingness of customers to compromise on, and/or wait for their requested vehicle specifications are identified as critical factors in vehicle purchases. An extensive empirically based simulation study is conducted to investigate these demand-side factors. The results show how the characteristics of the customer population affect the observed pattern in vehicle sales. The interaction effects of supply-side factors are also highlighted, in particular the effect of the replenishment policy used in the fulfillment system. The study also analyzes the distortion of the underlying demand signal in the sales distribution and the lead time and degree of compromise experienced by different customer populations. Significant managerial implications are highlighted, including the dangers of using the sales distribution as a definitive indicator of demand, the need for the order fulfillment process to align with the characteristics of the market, and the negative effects of focusing replenishment on a small subset of the most popular variants.     

On the Use of Paradox for Generating Theoretical Contributions in Management and Organization Research

Although research relating to paradox has burgeoned throughout the past decades, how paradox has been used in generating theoretical contributions remains largely tacit. Hinging on the systematic analysis of 476 publications, this literature review uncovers how scholars have leveraged paradox in demarcating theoretical contributions in the area of management and organization research. First, scholars can make use of paradox as a means to theorize, adding to the core conceptual conversation on paradox. Second, scholars can make use of paradox as a means to understand or advance insight on particular phenomena, drawing from paradox's conceptual knowledge to push forth discussions or debates in other strands of the management and organization field. Finally, scholars can make use of paradox as a way to verbalize something puzzling or surprising, supporting how readers are to appreciate or make sense of theoretical contributions advanced. Denoting approaches identified as highly complementary, this paper offers explicit handholds for academics to develop theoretical contributions through paradox, supporting the consolidation and further elevation of scholarly impact for the paradox community as such.     

Book-a-Book: Facilitating Access to Learning Materials for Students With Disabilities

Abstract

Until 2019, each higher education institution in Flanders had to develop their own workflows to handle requests for digital study materials for students with disabilities. At KU Leuven these requests are processed by KU Leuven Libraries Central Services. This unit, among other things, supports the core tasks of KU Leuven Libraries in the area of acquisitions and licensing negotiations with publishers. This article will focus on the creation and development of Book-a-Book, which has its origin in the service the KU Leuven Libraries Central Services has been providing for students with disabilities for KU Leuven students since 2011. Book-a-Book is a web application that facilitates access to learning materials for students with disabilities enrolled in Flemish higher education institutions. It is the first online tool to serve all higher education students with disabilities in Flanders and is the result of a collaboration between The Support Center for Inclusive Higher Education (SIHO), KU Leuven Libraries, and LIBIS (Leuven Integrated Library and Information System). SIHO is as a collaboration between the associations of the Flemish universities and colleges on the one side, and the Flemish government on the other side. The core responsibility of the SIHO lies in the support of all higher education institutions in realizing inclusive higher education for students with a disability. On September 12, 2019, Book-a-Book was launched on the international conference “Enhancing Student Experience: Innovative Support Tools for Students with Disabilities” in Brussels, Belgium.     

Signaling strength? An analysis of decision making in <Emphasis Type="Italic">The Weakest Link</Emphasis>

We analyze contestants’ behavior in the game show “The Weakest Link”. We focus on banking decisions, where a contestant chooses to secure an amount of money for the eventual winner, or to risk it on a general knowledge question. We find that contestants do not use the banking strategy that maximizes total expected prize money. Average earnings could be at least 17% higher. Our results suggest that contestants are not overconfident, but do try to convince other contestants that their ability is higher than it really is, in order to increase chances of winning the prize. We argue that this mechanism may also be applicable to other situations that are of economic interest.