The theoretical and empirical links between bullying behavior and male sexual violence perpetration

Bullying experiences and male sexual violence (SV) perpetration are major public health problems, and while extant literature suggests that they may share some developmental correlates, there is no established empirical link between being a perpetrator or victim of bullying and SV perpetration in the literature. Nonetheless, some SV prevention programs in the U.S. include bullying prevention components for elementary and middle-school aged children. Research is needed to test the hypothesized links between bullying experiences and SV perpetration to determine whether bullying prevention programs are likely to prevent SV perpetration. The purpose of this paper is to present results from a review of research on each of these topics and to discuss the potential shared and unique risk and protective factors within a social-ecological framework. The paper concludes with suggested directions for future research

Bullying and Students with Disabilities: The Untold Narrative

The documentary Bully was released nationwide in theaters in March 2012. Originally titled The Bully Project, the filmmakers followed five families whose lives had been turned upside down by bullying. Two of the families in the movie lost their sons, Tyler and Ty, to suicide, and three of the youth in the movie,Alex, Kelby, and Ja'Meya, were bullied in school and on the school bus. The movie shows the devastating consequences of bullying and the depressingly poor response on the part of adults. What the movie does not address is the mental health history of one of the boys, who commits suicide, as well as the developmental disabilities affecting another boy in the movie, who was born prematurely (Bazelon, 2012). Understandably, this is a difficult narrative. The filmmakers did not want to delve into the complexity of mental health issues and bullying for fear of creating a story line that those who are bullied are obvious victims. However, by not addressing the issues of ADHD, bipolar disorder, Asperger syndrome, and developmental disabilities, an important narrative was missed. Bullying is a complex phenomenon, and both mental health and physical health difficulties play into involvement in bullying. While there is no narrative that those who are bullied somehow deserve such egregious treatment, we shirk our professional responsibilities if we do not shed light on the compelling evidence that youth with disabilities are at great risk for involvement in bullying-both for bullying others and for being bullied (AbilityPath.org, 2011; Rose, Monda-Amaya, & Espelage, 2011). The purpose of this article is to review the research on bullying and students with disabilities and to propose an inclusive narrative: when differences are celebrated rather than used as fuel for maltreatment, a world will be created where bullying is not tolerated. This will be a better world for everyone

Characteristics and risk factors for symptomatic Giardia lamblia infections in Germany

Background: In developed countries, giardiasis is considered a travel related disease. However, routine surveillance data from Germany indicate that >50% of infections were acquired indigenously. We studied the epidemiological characteristics of symptomatic Giardia infections acquired in Germany and abroad, and verified the proportion of cases acquired in Germany in order to investigate risk factors for sporadic autochthonous Giardia infections. Methods: We identified Giardia cases notified by 41 local health authorities between February 2007 and January 2008 and interviewed them on their clinical symptoms, underlying morbidities, travel abroad and potential risk factors for the disease. We conducted a case-control-study including laboratory-confirmed (microscopy or antigen-test) autochthonous Giardia cases with clinical manifestations (diarrhoea, cramps, bloating) and randomly selected controls from the local population registry matched by county of residence and age-group (0-5, 6-19, ≥20 years). Secondary cases, controls with diarrhoea and persons who had travelled outside Germany in the three weeks prior to disease onset (exposure period) were excluded. We calculated adjusted odds ratios (aOR) with 95% confidence intervals (CI) using conditional logistic regression. Results: Of 273 interviewed cases, 131 (48%) had not travelled abroad during the defined exposure period. Of these 131, 85 (65%) were male, 68 (54%) were living in communities with >100,000 inhabitants and 107 (83%) were aged 20 years or older. We included 120 cases and 240 controls in the case-control study. Cases were more likely to be male (aOR 2.5 CI 1.4-4.4), immunocompromised (aOR 15.3 CI 1.8-127) and daily consumers of green salad (aOR 2.9 CI 1.2-7.2). Contact with animals (pets/farm animals) and exposure to surface water (swimming/water sports) were not associated with symptomatic disease. Conclusions: A substantial proportion of Giardia lamblia cases in Germany are indigenously acquired. Symptomatic cases are significantly more likely to be immunocompromised than control persons from the general population. Physicians should consider Giardia infections among patients with no recent history of travel abroad, particularly if they have immune deficiencies. Green salads may be an important vehicle of infection. Information campaigns highlighting this food-borne risk should emphasise the risk to persons with immune deficiencies

Parameterized Approximation Schemes using Graph Widths

Combining the techniques of approximation algorithms and parameterized complexity has long been considered a promising research area, but relatively few results are currently known. In this paper we study the parameterized approximability of a number of problems which are known to be hard to solve exactly when parameterized by treewidth or clique-width. Our main contribution is to present a natural randomized rounding technique that extends well-known ideas and can be used for both of these widths. Applying this very generic technique we obtain approximation schemes for a number of problems, evading both polynomial-time inapproximability and parameterized intractability bounds

Limitations of focussing on homophobic, biphobic and transphobic ‘bullying’ to understand and address LGBT young people’s experiences within and beyond school

This paper presents new empirical data that highlight how a focus on ‘bullying’ is too limited and narrow when thinking about homophobia, biphobia and transphobia that young people may experience. The paper draws on two recent studies with young lesbian, gay, bisexual and trans participants, which each identified issues and experiences not readily captured within dominant bullying discourses and understandings. Findings are examined within three sections: beyond ‘bullying’, questioning inevitability, and (in)appropriate responses. In conclusion, I set out some implications and suggestions for the development of practice and future research concerning homophobia, biphobia and transphobia in youth settings

Parameterized Edge Hamiltonicity

We study the parameterized complexity of the classical Edge Hamiltonian Path problem and give several fixed-parameter tractability results. First, we settle an open question of Demaine et al. by showing that Edge Hamiltonian Path is FPT parameterized by vertex cover, and that it also admits a cubic kernel. We then show fixed-parameter tractability even for a generalization of the problem to arbitrary hypergraphs, parameterized by the size of a (supplied) hitting set. We also consider the problem parameterized by treewidth or clique-width. Surprisingly, we show that the problem is FPT for both of these standard parameters, in contrast to its vertex version, which is W-hard for clique-width. Our technique, which may be of independent interest, relies on a structural characterization of clique-width in terms of treewidth and complete bipartite subgraphs due to Gurski and Wanke

Verifying the ecological model of peer aggression on Croatian students

Using the ecological approach, the goal of this study was to determine the predictors of physical and verbal peer aggressive behavior. The participants were 880 school students from the fifth to eighth grade (48% boys and 52% girls) and the same number of parents (19% fathers and 61% mothers) as well as 107 teachers. The main analysis was performed using multivariate–multilevel modeling. The following significant predictors of physical peer aggression were obtained: Boys, a greater degree of impulsivity, more parental punishment, poorer school success, more time spent with the media, and the perception of great neighborhood dangerousness. For verbal peer aggression, the significant predictors were: A greater degree of impulsivity, lower level of affective empathy, more parental punishment, lack of parental supervision, lesser peer acceptance, large differences in family income, more time spent with the media, and the perception of great neighborhood dangerousness. A moderating effect of neighborhood dangerousness and parental supervision was found. The results were interpreted within Bronfenbrenner’s ecological model

Understanding the Complexity of School Bully Involvement

Bullying perpetration and victimization are issues of increasing concern for researchers, educators, clinicians, parents and youth today. Bullying broadly refers to aggressive behaviors including physical aggression (hitting, shoving, tripping, etc.), verbal aggression (teasing, name-calling, threatening) as well as relational aggression (rumor spreading, exclusion, isolation from clique). Bullying is thought to differ from normal peer conflict in that it is often repeated and involves a difference in power between the bully and victim. Bullying behaviors also extend to the use of the internet and cell-phones to harass and intimidate recipients. Bullying through these mediums is commonly referred to as cyberbullying. Although initially studied in the context of schools, bullying research has since been extended to sibling relationships, workplace interactions and dating and intimate relationships

Sibling bullying at 12 years and high-risk behavior in early adulthood : a prospective cohort study

Emerging evidence suggests that sibling aggression is associated with the development of high‐risk behavior. This study investigated the relationship between sibling bullying perpetration and victimization in early adolescence and high‐risk behavior in early adulthood. Sibling bullying was assessed at 12 years in 6,988 individuals from the Avon Longitudinal Study of Parents and Children, a birth cohort based in the UK and high‐risk behavioral outcomes were assessed at 18–20 years. Frequent sibling bullying perpetration predicted antisocial behavior (OR = 1.74; 95%CI, 1.38–2.20), while frequent sibling bullying victimization increased the odds of nicotine dependence (OR = 2.87; 95%CI, 1.55–5.29), even after accounting for peer bullying and parent maltreatment. Categorical analysis revealed that particularly bullies and bully‐victims were at risk of developing high‐risk behavior. Finally, this study found that adolescents who were involved in bullying perpetration across multiple contexts (home and school) had the highest odds of reporting antisocial behavior (OR = 3.05; 95%CI, 2.09–4.44), criminal involvement (OR = 2.12; 95%CI, 1.23–3.66), and illicit drug use (OR = 2.11; 95%CI, 1.44–3.08). Findings from this study suggest that sibling bullying perpetration may be a marker of or a contributory factor along the developmental trajectory to antisocial behavior problems. Intervention studies are needed in order to test whether reducing sibling bullying can alleviate long‐term adverse social and behavioral outcomes

The zoonotic potential of Clostridium difficile from small companion animals and their owners

Background: Clostridium difficile infections (CDI) in humans range from asymptomatic carriage to life-threatening intestinal disease. Findings on C. difficile in various animal species and an overlap in ribotypes (RTs) suggest potential zoonotic transmission. However, the impact of animals for human CDI remains unclear. Methods: In a large-scale survey we collected 1,447 fecal samples to determine the occurrence of C. difficile in small companion animals (dogs and cats) and their owners and to assess potential epidemiological links within the community. The Germany-wide survey was conducted from July 2012-August 2013. PCR ribotyping, Multilocus VNTR Analysis (MLVA) and PCR detection of toxin genes were used to characterize isolated C. difficile strains. A database was defined and logistic regression used to identify putative factors associated with fecal shedding of C. difficile. Results: In total, 1,418 samples met the inclusion criteria. The isolation rates for small companion animals and their owners within the community were similarly low with 3.0% (25/840) and 2.9% (17/578), respectively. PCR ribotyping revealed eight and twelve different RTs in animals and humans, respectively, whereas three RTs were isolated in both, humans and animals. RT 014/0, a well-known human hospital-associated lineage, was predominantly detected in animal samples. Moreover, the potentially highly pathogenic RTs 027 and 078 were isolated from dogs. Even though, C. difficile did not occur simultaneously in animals and humans sharing the same household. The results of the epidemiological analysis of factors associated with fecal shedding of C. difficile support the hypothesis of a zoonotic potential. Conclusions: Molecular characterization and epidemiological analysis revealed that the zoonotic risk for C. difficile associated with dogs and cats within the community is low but cannot be excluded