Friendship and Delinquency: Selection and Influence Processes in Early Adolescence

Positive association of relevant characteristics is a widespread pattern among adolescent friends. A positive association may be caused by the selection of similar others as friends and by the deselection of dissimilar ones, but also by influence processes where friends adjust their behavior to each other. Social control theory argues that adolescents select each other as friends based on delinquency. Differential association theory, on the other hand, argues that adolescent friends influence each other's delinquency levels. We employ new statistical methods for assessing the empirical evidence for either process while controlling for the other process. These methods are based on ‘actor‐oriented’ stochastic simulation models. We analyze longitudinal data on friendship networks and delinquent behavior collected in four waves of 544 students in 21 first‐grade classrooms of Dutch secondary schools. Results indicate that adolescents select others as friends who have a similar level of delinquency compared with their own level. Estimates of the social influence parameters are not significant. The results are consistent with social control theory but provide no support for differential association theory.     

A distance measure for choice functions

This paper discusses and characterizes a distance function on the set of quasi choice functions. The derived distance function is in the spirit of the widely used Kemeny metric on binary relations but extends Kemeny’s use of the symmetric difference distance to set functions and hence to a more general model of choice.     

Video-Based Studies of Work Practice

The use of the visual, let alone video, is surprisingly rare within social scientific studies of work and organisations. Nevertheless there is an emerging corpus of research that use video recordings, augmented by field work, as their principal data; recordings that provide access to the fine details of work as it is accomplished within everyday organisational settings. They include studies of work in a broad range of domains, including call centres, mobile offices, operating theatres, construction sites and control centres. This paper outlines the nature of these video-based studies of work and organisation and highlights some of their major contributions to our understanding of issues such as the nature of skill and expertise, the use of technology and the organisation of teamwork. It also reflects on the impact that these studies, and this approach, are having within the practical fields of industrial and market research.     

Zeitfaktoren bei interkultureller Kommunikation in Gruppen — phänomenologische Fragmente

Communication, in intercultural contexts, is not only confronted with different customs dealing with the time concept of various countries of origin. Considerable time is needed when communication breaks down in groups when coping with language and other cultural problems. When people have subject specific things in common, they are more able to overcome cultural differences and, to a certain extent increase understanding between each other. Intercultural groups seem to communicate quicker in this case than those who lack compatibility because they are not subject to the respective culture-bound ways of working in cross-cultural groups which hinder communication.     

Analysing the Gender Wage Gap (GWG) Using Personnel Records

We use monthly personnel records of a large German company for the years 1999–2005 to analyse the gender wage gap (GWG). The unconditional GWG is 15 per cent for blue‐collar and 26 per cent for white‐collar workers. Different returns to entry age explain a substantial part of the GWG as well as segregation of men and women in different hierarchical levels. The relative GWG increases with increasing tenure for blue‐collar but declines for white‐collar workers. Taking into account the different impact of general and firm‐specific human capital on white‐collar and blue‐collar occupation, this is consistent with theories of statistical discrimination.     

Relative Performancebewertung und Produktmarktwettbewerb

Relative Performance Evaluation aims at reducing incentive risk imposed on a manager, and at influencing product market choices. Thereby, firm owners can choose stronger effort incentives, and they may reduce the degree of competition with the firm’s competitors. Within a principal/agent-model, we explore the interrelation between characteristics of product market competition, performance evaluation, and incentives. Our results show that a firm’s optimal performance evaluation significantly depends on the characteristics of product market competition. This implies that a firm’s optimal choice of performance evaluation is firm- and industry-specific. Hence, our results support the industry-selection-approach recently applied in empirical compensation studies.