School Sense of Community,Teacher Support,and Students’ School Safety Perceptions

This study examined the association between two characteristics of school climate (sense of community and teacher support, measured both at the individual and at the school level) and students’ feelings of being unsafe at school. The study involved a sample of 49,638 students aged 10–18 years who participated in the 2010–2012 California Healthy Kids Survey. Using hierarchical linear modeling (HLM), our findings revealed that, at the individual level, students perceiving higher levels of sense of community and teacher support at school were less likely to feel unsafe within the school environment. At the school level, sense of community was negatively associated with unsafe feelings, whereas there was no association between school‐level teacher support and feelings of being unsafe at school.     

The relationship between need for closure and compliance to harsh power tactics in high demanding jobs: A study conducted among firefighters and social workers

The present research aimed at expanding Pierro, Kruglanski, and Raven’s work examining the interweaving between the need for closure (NFC; the desire to form quick and unambiguous knowledge) and the Interpersonal Power Interaction model. In particular, this study explored the idea that the greater compliance to harsh power tactics of subordinates’ employees, that are high on NFC, can increase when their desire to achieve cognitive closure is made more salient by a high (compared to low) level of perceived job demands. A sample of 280 subordinates employees belonging to two different organizational contexts filled in a self-report questionnaire. Through a moderation and simple slope analyses, we tested and confirmed our hypothesis. When job demands were high, it potentially impaired the subordinates’ chance to form a quick knowledge. As a result, high NFC subordinates showed a higher compliance with harsh power tactics. Such tactics, limiting the subordinates’ freedom of choice, can be conceived as a means to gain quick knowledge when the organizational context is perceived as particularly demanding. As far as practical implications, these results suggest that for high NFC subordinates the use of more directive and unambiguous guidelines (e.g., harsh power tactics) could minimize the scarcely tolerated cognitive cost associated with high job demands.     

Bullying in school and adolescent sense of empowerment: an analysis of relationships with parents,friends, and teachers

We explore the development of bullying and victimization in school by investigating 11‐, 13‐ and 15‐year‐olds' sense of interpersonal empowerment with parents, friends and teachers. A national sample of 4386 male and female students from 243 middle and secondary schools in Italy were surveyed. Boys were more likely than girls to be bullies and more likely to have been a bully/victim. Victimization and the likelihood of being both a bully and a victim declined with age. Bullying increased with age among boys whereas for girls it was slightly more prevalent at age 13 than ages 11 or 15. The sense of empowerment students experience with their teachers decreased in the older cohorts. Disempowered relationships with teachers consistently predicted bullying behaviour. Higher social competence was reported by 13‐ and 15‐year‐old bullies. Chronically bullied students had lower social competence in all age cohorts. Otherwise, predictors of victimization varied by age: 11‐year‐old victims felt less empowered by their teachers; 15‐year‐old victims reported more difficulties in negotiating cooperative relationships with parents. Bullies in all cohorts and younger bully/victims feel less empowered by their teachers. These findings suggest that students who are disempowered by teachers may either compensate by oppressing (bullying) peers or generalize the power differential with peers (become a victim). Copyright © 2007 John Wiley & Sons, Ltd.     

Automatic verification of multi-agent systems by model checking via ordered binary decision diagrams

We present a methodology for the verification of multi-agent systems, whose properties are specified by means of a modal logic that includes a temporal, an epistemic, and a modal operator to reason about correct behaviour of agents. The verification technique relies on model checking via ordered binary decision diagrams. We present an implementation and report on experimental results for two scenarios: the bit transmission problem with faults and the protocol of the dining cryptographers.     

Interpolating physical exercise between instigation to aggress and aggression: The role of irritability and emotional susceptibility

Two studies were conducted using the Buss aggression machine paradigm to investigate the mediational role of physical exercise with respect to subsequent aggression in relation to the presence or absence of previous instigation. The irritability level of subjects was taken into account in the first study, and the subject' emotional susceptibility level in the second study. In both studies sex differences were also considered so that each study resulted in a 2 × 2 × 2 × 2 design with ten subjects in each cell. As far as irritability is concerned, experimental subjects (pedaling on a bicycle ergonometer) delivered higher shocks than controls (who just waited out the 10 min the experimental subjects were pedaling), independent of irritability level or of the presence or absence of previous instigation. When emotional susceptibility was taken into consideration, physical exercise associated with high level of emotional susceptibility and previous instigation resulted in increased intensity of the shocks subsequently delivered. These findings are discussed in terms of the importance of stable personality characteristics that may differentially mediate aggression.     

How Neighborhood Structural and Institutional Features Can Shape Neighborhood Social Connectedness: A Multilevel Study of Adolescent Perceptions

According to the norms and collective efficacy model, the levels of social connectedness within a local community are a function of neighborhood structural characteristics, such as socioeconomic status and ethnic composition. The current work aims to determine whether neighborhood structural and institutional features (neighborhood wealth, percentage of immigrants, population density, opportunities for activities and meeting places) have an impact on different components of neighborhood social connectedness (intergenerational closure, trust and reciprocity, neighborhood-based friendship and personal relationships with neighbors). The study involved a representative sample of 389 early and middle adolescents aged 11–15 years old, coming from 31 Italian neighborhoods. Using hierarchical linear modeling, our findings showed that high population density, ethnic diversity, and physical and social disorder might represent obstacles for the creation of social ties within the neighborhood. On the contrary, the presence of opportunities for activities and meeting places in the neighborhood was associated with higher levels of social connectedness among residents.     

Individual and class moral disengagement in bullying among elementary school children

A cross‐sectional study from a sample of 663 elementary school children assessed the four sets of moral disengagement mechanisms conceptualized by Bandura (i.e., cognitive restructuring, minimizing one's agentive role, disregarding/distorting the consequences, blaming/dehumanizing the victim) at both the individual and the class level. Additionally, an analysis of the relations of these mechanisms to pro‐bullying behavior was conducted. Multilevel analysis showed a significant relationship between cognitive restructuring and individual pro‐bullying behavior. Moreover, between‐class variability of pro‐bullying behavior was positively related to minimizing one's agentive role and blaming/dehumanizing the victim at the class level. Conversely, class disregarding/distorting the consequences was negatively associated with between‐class variation in the outcome behavior. Implications for understanding the role of morality in children's bullying are discussed. Aggr. Behav. 38:378‐388, 2012. © 2012 Wiley Periodicals, Inc.     

The intrusive commercial: Influence of aggressive TV commercials on aggression

Two experiments have been conducted to investigate the aggression-eliciting properties of an aggressive commercial. The first experiment investigated the influence of an aggressive commercial on subsequent delivery of shocks to a confederate by male or female subjects, in presence and in absence of previous instigation to aggress. The second experiment examined the heart rate modifications before, during and after exposure to the aggressive commercial. Twenty males and 20 females participated to each experiment. Findings justify the concern for the aggression-eliciting properties of aggressive commercials.