Age structure,education, and the transmission of technical change

This paper presents a model of optimal economic growth with exogenous technical change that is embodied in people. That is, newly invented techniques can be used only if the production unit engages labour that has been trained to produce according to this new technique. The model illustrates the negative impact of slower population growth on the rate of technology adaptation. When the growth rate of population is high, the introduction of technological innovations into the production process is primarily achieved through the constant influx of recently educated young people. When the relative share of this influx is reduced, increased education becomes necessary in order to prevent the gap between technology in theory and technology in practice from becoming too large.I would like to thank an anonymous referee for helpful comments     

Gay SM in pornography and reality

A picture of SM interactions as depicted by pornographical issues of SM between 1974 and 1983 is presented by means of a correlational study of pornography. Actual SM scenarios are then compared with the depiction in magazines. The changes that have occurred over more than a decade reflected changes in the nature of violence and sexuality.     

Migration and fertility in Ticino

Summary Migration in the Swiss canton of Ticino is one example of the wide variety of demographic systems that existed in pre-industrial Europe. The continuous movement of men was a consequence of economic, social and geographic conditions which restricted the demand for labour. Seasonal migration and overseas migration were both sex and age selective. They resulted in an imbalance of the sex ratio and a remarkably low female nuptiality. They also reduced fertility within marriage by separating husbands and wives during their childbearing years. The effect of long, medium and short-term migration on fertility can be isolated from census and vital registration sources.     

Summer holiday camps for gay and lesbian young adults: an evaluation of their impact on social support and mental well-being

This study evaluates the effects of participating in a summer holiday camp for Flemish (Belgium) gay and lesbian young adults (N 197). Analysis showed to what extent participation affects the constitution and quality of friendships, the availability of confidant and appraisal support and reported levels of hopelessness, self-esteem, and depression. The study is based on panel data with a six-months interval. At follow-up, respondents reported a higher proportion of gays and lesbians in their friendship network, more satisfaction with these friendships, higher levels of confidant and appraisal support, less hopelessness, higher self-esteem, and lower levels of depression.     

The need for marriage contracts: An experimental study

A spouse who invests in relationship specific human capital enlarges the size of a couples total surplus. Such investments typically also weaken the outside opportunities of the specializing spouse and thereby her bargaining position. Realizing this, underinvestment in relationship specific human capital may result. This reduces the couples potential surplus. Private or public marriage contracts can stipulate conditions to solve this holdup underinvestment problem. This paper reports about an experiment that addresses the practical relevance of this problem. We find that although underinvestment in home production occurs, it is less frequent than game theory predicts. That is: players are prepared to specialize in home production when backwards induction predicts them not to do so. Furthermore, we find that the non-investing spouses are less opportunistic towards their partners when the large surplus has been created by the spouse than when the size of the surplus is determined exogenously.We gratefully acknowledge valuable comments from Theo Offerman, Randolph Sloof, from seminar participants in Amesterdam and Mannheim and from an anonymous referee. An earlier version of this paper circulated under the title Bargaining with endogenous pie sizes and disagreement points. Oosterbeek and Sonnemans are from the University of Amsterdam and the Tinbergen Institute. Van Velzen works for the Dutch Ministery of Finance. Oosterbeek is also affiliated with NWO program Scholar, and Sonnemans with CREED. Responsible editors: Alessandro Cigno.     

Land Use Regulation and Welfare

We evaluate the effect of land use regulation on the value of land and on welfare. Our estimates are based on a decomposition of the effects of regulation into three components: an own‐lot effect, which reflects the cost of regulatory constraints to the owner of a parcel; an external effect, which reflects the value of regulatory constraints on one's neighbors; a supply effect, which reflects the effect of regulated scarcity of developable land. Using this decomposition, we arrive at a novel strategy for estimating a plausibly causal effect of land use regulation on land value and welfare. This strategy exploits cross‐border changes in development, prices, and regulation in regions near municipal borders. Our estimates suggest large negative effects of regulation on the value of land and welfare in these regions.     

Implicit theories in organizational settings: A systematic review and research agenda of implicit leadership and followership theories

Implicit theories play important roles in many areas of human life. In this review, we focus on implicit leadership and followership theories, i.e. implicit assumptions of (good) leaders and followers, respectively. We provide a framework for categorizing the existing research in this field. We use this framework to show the current state of research and to illustrate the gaps in the literature. More precisely, we review which types of prototypes of leaders and followers have been studied, the effects of comparisons between the actual leader (respectively follower) with these activated prototypes as well as the contextual factors that influence prototype activation and prototype fit. We conclude by outlining implications for human resource management and for future research, thereby focusing on research questions that can be used to integrate the distinct paths in implicit leadership and followership theories.     

Loneliness Literacy Scale: Development and Evaluation of an Early Indicator for Loneliness Prevention

To develop and evaluate the Loneliness Literacy Scale for the assessment of short-term outcomes of a loneliness prevention programme among Dutch elderly persons. Scale development was based on evidence from literature and experiences from local stakeholders and representatives of the target group. The scale was pre-tested among 303 elderly persons aged 65 years and over. Principal component analysis and internal consistency analysis were used to affirm the scale structure, reduce the number of items and assess the reliability of the constructs. Linear regression analysis was conducted to evaluate the association between the literacy constructs and loneliness. The four constructs “motivation”, “self-efficacy”, “perceived social support” and “subjective norm” derived from principal component analysis captured 56 % of the original variance. Cronbach’s coefficient α was above 0.7 for each construct. The constructs “self-efficacy” and “perceived social support” were positively and “subjective norm” was negatively associated with loneliness. To our knowledge this is the first study developing a short-term indicator for loneliness prevention. The indicator contributes to the need of evaluating public health interventions more close to the intervention activities.     

Caring for Troubled Children in Flanders, The Netherlands, and the United Kingdom

Correspondence to Dr Matthew Colton, Lecturer in Applied Social Studies, Centre for Applied Social Studies, University College of Swansea, Singleton Park, Swansea SA2 8PP. Summary This article reviews research on residential care and otherservices for troubled children in Flanders, the Netherlands,and the United Kingdom. We begin by looking at Flanders andthe Netherlands. This includes an account of the organizationof services and a critical evaluation of initiatives resultingfrom the growing dissatisfaction with residential care overrecent years. We then compare the evidence from these two countrieswith the situation in the United Kingdom. Notwithstanding importantdifferences, there are clear similarities in the issues surroundingthe residential care of children in the three countries. Weconclude by outlining likely future developments in residentialchild care.