Gender Differences in Delinquency and Situational Action Theory: A Partial Test

This paper investigates to what extent a recent perspective in criminology, Situational Action Theory, is valid for both males and females and to what extent elements from the theory explain gender differences in delinquency. Data are used from the first (N?=?843) and second (N?=?616) wave of the Study of Peers, Activities, and Neighborhoods, which included detailed data about core elements of Situational Action Theory (morality, self-control, unsupervised peer activity and peer deviancy), proposed indirect causes (bonds with parents and school, parental monitoring) and self-reported delinquency. Cross-sectional and lagged Tobit regression analyses show that the core relations with delinquency are not significantly different between boys and girls and that the elements of Situational Action Theory are able to explain gender differences in delinquency for a substantial part. However, there is still a remaining independent effect of gender on current and lagged delinquency.     

A mid-level methodology for evaluating economic development projects

This article describes the key elements of a computerized spreadsheet model that can be used by public officials and agency staff to assess in advance the likely economic and fiscal effects of economic development projects. While the model in its current state is based on Chicago, local data can be used to adapt it to other places. The project is innovative in its use of current economic theory, data, and tools to create a model useable on a routine basis by non-specialist public agency staff. The aim is to narrow the gap between academic economic analysis and public sector practice. A key element of the model is that it was developed in close cooperation with staff of the Chicago Department of Planning and Development and combines rigorous economic analysis with the political priorities and choices of public agency staff. Also, the model includes key data about the local economy and standard industry data, but can be overridden by an

analyst if project-specific information is available.     

Dyadic Variability in Mother-Adolescent Interactions: Developmental Trajectories and Associations with Psychosocial Functioning

Dyadic variability is considered to be a key mechanism in the development of mother-adolescent relationships, and low levels of dyadic flexibility are thought to be associated with behavior and relationship problems. The present observational study examined heterogeneity in the development of dyadic variability in mother-adolescent interactions and associations with psychosocial functioning. Dyadic variability refers to the range of emotional states during interactions of mother-adolescent dyads. During five annual home visits, 92 mother-adolescent dyads (M age T1 = 13; 65.2 % boys) were videotaped while discussing a conflict, and they completed several questionnaires on adolescents’ aggressive behavior and adolescents’ and mothers’ perceived relationship quality. Two types of dyads were distinguished: low variability dyads (52 %) and high decreasing variability dyads (48 %). Over time, high decreasing variability dyads were characterized by a broader emotional repertoire than low variability dyads. Moreover, these two dyad types had distinct developmental patterns of psychosocial adjustment. Over time, high decreasing variability dyads showed lower levels of adolescents’ aggressive behavior, and higher levels of perceived relationship quality than low variability dyads. These findings suggest that over time more dyadic variability is associated with less adjustment problems and a more constructive development of the mother-adolescent relationship. Adaptive interactions seem to be characterized by a wider range of emotional states and mothers should guide adolescents during interactions to express both positive and negative affect. Observing the dyadic variability during mother-adolescent interactions can help clinicians to distinguish adaptive from maladaptive mother-adolescent dyads.     

The Individual Characteristics,Ethnic Identity,and Cultural Orientation of Successful Secondary School Students of Turkish and Moroccan Background in The Netherlands

The present study focuses on the individual characteristics, cultural orientation, and ethnic identity of academically successful 17-year-old adolescents of Turkish and Moroccan background in the Netherlands. One hundred and six successful and less successful adolescents of Turkish, Moroccan, and Dutch background participated in the study. The successful ethnic minority students were expected to be highly motivated and determined to succeed. They were thought to have more problems with their ethnic identity as well. It was concluded that success might be explanable in terms of a more positive attitude toward the Dutch society. The successful students did not need to be highly motivated to be academically successful. Although the successful Turkish and Moroccan background students had somewhat more doubts and more negative feelings about belonging to their ethnic group, this does not seem to lead to identity problems.     

European Structural Policy: Bend or Break

This article deals with the consequences for the European Structural Policy (ESP) of the extension of the EU with countries from Central and East Europe. It argues that the allocation mechanism of financial assistance from the structural funds must be changed profoundly in order to gain a balanced system of distributing the available funds. In view of the changing Common Agricultural Policy and international trade policy in the framework of the WTO the European Structural Policy will become gradually more important. In order to compensate for the decreasing price support for agricultural products extension of structural assistance in the near future is inevitable.     

Validation of a microchip electrophoresis system as a DNA amplification control

As part of the normal procedure in a forensic DNA laboratory, a quality control step of the amplified DNA is often implemented to ensure the correct amplification of the sample before it is analysed in downstream applications. A validation study was undertaken to investigate a new microchip electrophoresis system (MultiNa, Shimadzu Corporation) claiming high resolution and sensitivity compared to routine polyacrylamide gel electrophoresis (PAGE). An array of STR multiplexes (AmpFISTR™ SGM+, GenePrint^® FFFL, PowerPlex™ 16, PowerPlex™ Y, an in-house Y-STR multiplex and AmpFISTR™ Profiler) was tested under both standard and low copy number PCR parameters to evaluate the accuracy, reproducibility and sensitivity of this technique. These tests showed that the microchip system did not have improved sensitivity compared to PAGE though had increased resolution and high reproducibility between samples.     

Development and evaluation of multiplex Y-STR assays for application in molecular genealogy

Three multiplex PCRs were developed for the analysis of 14 single-copy and 4 multi-copy Y chromosome Short Tandem Repeat (STR) loci routinely used by several public genealogical databases. These assays were used in addition to PowerPlex^® Y for the analysis of 245 DNA samples from a genealogical project. In total 244 different haplotypes composed of 37–40 alleles were identified with one haplotype identical between two males with the same surname. The multi-copy loci DYS464 and DYS724 were the most polymorphic with a gene diversity of at least 0.964. The use of DYS454 and DYS455 can be questioned as these loci had the lowest gene diversity (0.039 and 0.269, respectively).