Voluntary childlessness in the Netherlands

Until recently, Holland has had a high birth rate and a low employment rate for married women when compared with other industrialized countries. This high rate, together with (since 1920) the lowest death rate in Northwestern Europe, has constituted a bona fide demographic anomaly. Nevertheless, the picture is now changing rapidly. In spite of the still traditional pronatalistic socialization, a remarkable rise in voluntary childlessness is taking shape. Author's Note: Thanks are due Professor Larry D. Barnett, who helped me to make my English understandable to more people than myself.     

Women under protection – in hiding from violent men

In Sweden in 2007, 11,047 people, out of a population of around nine million were living under at-risk conditions requiring protective measures for their safety. Sixty per cent were women, most of them hiding from men who had battered them and were still threatening and stalking them. In this research and intervention study, a group of women in hiding were given different kinds of support and 23 women were interviewed. These women struggle to make a living, work or study, and their finances are extremely strained. Their social networks/interactions are nonexistent. Living under constant threat and insecurity has an adverse impact on the women's health. The community is obliged, for economic and security reasons, to support battered women. There are still severe shortcomings with regard to security. One recommendation is the institution of personal protection officers, i.e. specially trained social service caseworkers able to support the woman once protection measures have been decided.     

European management: An emerging competitive advantage of European nations

This article extends the debate begun in the June 1992 issue of EMJ when the authors first criticized Michael Porter's explanatory framework in his Competitive Advantage of Nations (1990), over the role of national culture on the competitive advantage of nations. In this paper, Frans van den Bosch and Arno van Prooijen stress that Europe is a locus of competitive advantage if one is prepared to pay attention to the possibility of ‘European Management’ as a potential asset of European firms. In this connection, the transnationalization of European firms is of importance.     

Maintaining strategic momentum: The CEO''s agenda

How does the chief executive of a large complex organization maintain strategic momentum? This represents a great challenge when there are no obvious external threats, and no obvious reasons for having a concerted action. Floris Maljers, Charles Baden-Fuller and Frans van den Bosch explore the inherent tensions which exist between stability and change. Change is necessary to maintain success, but too much change is disastrous. The authors argue that there are several possible solutions to this paradox, including that of generating periods of intense activity followed by periods of comparative stability and incremental improvement. Using the introspection of one of the CEOs of Unilever, who held office from 1984 to 1994, the authors examine how these tensions were played out and resolved.     

Reclassifying causes of death to study the epidemiological transition in The Netherlands, 1875–1992

This article describes a method for reclassifying causes of death in the Netherlands for the period 1875–1992. Two criteria should be met to obtain a useful classification to study the epidemiological transition. First, the categories should be nosologically continuous over the period under study and second, there should be enough detail in causes which are important in the context of the epidemiological transition viz. communicable diseases, non-communicable diseases and external causes of death. A method developed by Vallin and Meslé (1988), which involves ‘dual correspondence tables’ and ‘fundamental associations’, was used to create nosologically continuous categories. These categories were tested for statistical continuity during the transition years of one ICD-revision to the next, using ordinary least squares regression analysis. The reclassification procedure resulted in a nested classification consisting of three levels of refinement of causes of death: 27 causes, 1875–1992; 65 causes, 1901–1992; and 92 causes, 1931–1992. On the basis of this classification, 43% of all deaths in 1875–79 and 98% of all deaths in 1992 could be allocated to either communicable diseases, non-communicable diseases or external causes.     

Mixed Messages: Inconsistent Parental Mediation Indirectly Predicts Teens’ Online Relational Aggression

Although the predictors of off-line relational aggression have been examined in prior work, less is known about the factors that contribute to online relational aggression perpetration and victimization. This study examined parental restrictive and active mediation of teenagers’ social media use as potential predictors of these outcomes. We were particularly interested in understanding whether parental agreement about media rules and the consistency with which mediation was implemented had implications for teens’ social media use, conflict with parents, and experience with online relational aggression. We conducted an online survey of 814 adolescents from the United States (14- to17-year-olds), asking about perceived agreement between parents about media rules, parental mediation styles, the teens’ social media use, and their experiences with online relational aggression. Results showed that parental rule agreement negatively predicted inconsistent parental mediation. Inconsistent parental mediation predicted more adolescent social media use and more parent-teen conflict over media rules, which in turn, predicted both online victimization and perpetration.     

Computing Normal Form Perfect Equilibria for Extensive Two‐Person Games

This paper presents an algorithm for computing an equilibrium of an extensive two‐person game with perfect recall. The method is computationally efficient by virtue of using the sequence form, whose size is proportional to the size of the game tree. The equilibrium is traced on a piecewise linear path in the sequence form strategy space from an arbitrary starting vector. If the starting vector represents a pair of completely mixed strategies, then the equilibrium is normal form perfect. Computational experiments compare the sequence form and the reduced normal form, and show that only the sequence form is tractable for larger games.     

Olympic medals as an indicator of social welfare

The relation between the amount of medals won at the Olympic games and various welfare indicators has been established for the games of Barcelona and Seoul using a Bayesian method of Poisson regression. It was found that medals won correlate strongly with income as well as with more general welfare indicators and that the elasticity with respect to the size of the population is surprisingly smaller than unity.