Pubertal stage and the prevalence of violence and social/relational aggression

OBJECTIVE We examined associations between pubertal stage and violent adolescent behavior and social/relational aggression.

METHODS The International Youth Development Study comprises statewide representative student samples in grades 5, 7, and 9 (N = 5769) in Washington State and Victoria, Australia, drawn as a 2-stage cluster sample in each state. We used a school-administered, self-report student survey to measure previous-year violent behavior (ie, attacking or beating up another person) and social/relational aggression (excluding peers from the group, threatening to spread lies or rumors), as well as risk and protective factors and pubertal development. Cross-sectional data were analyzed.

RESULTS Compared with early puberty, the odds of violent behavior were approximately threefold higher in midpuberty (odds ratio [OR]: 2.87 [95% confidence interval (CI): 1.81–4.55]) and late puberty (OR: 3.79 [95% CI: 2.25–6.39]) after adjustment for demographic factors. For social/relational aggression, there were weaker overall associations after adjustment, but these associations included an interaction between pubertal stage and age, and stronger associations with pubertal stage at younger age were shown (P = .003; midpuberty OR: 1.78 [95% CI: 1.20–2.63]; late puberty OR: 3.00 [95% CI: 1.95–4.63]). Associations between pubertal stage and violent behavior and social/relational aggression remained after the inclusion of social contextual mediators in the analyses.

CONCLUSIONS Pubertal stage was associated with higher rates of violent behavior and social/relational aggression, with the latter association seen only at younger ages. Puberty is an important phase at which to implement prevention programs to reduce adolescent violent and antisocial behaviors.

The identification of implicit theories in domestic violence perpetrators

An understanding of how the beliefs of domestically violent offenders might influence their abusive behavior is central to the development and delivery of any intervention program that aims to reduce the risk of further violence against women and children. This article reports the results of a preliminary investigation into the core beliefs of a sample of domestically violent men. Three major themes emerged from an analysis of the accounts of their violence, which were understood in relation to three implicit theories that participants held about themselves, their relationships, and the world. These are discussed in terms of previous studies of offender cognition, how domestic violence programs might be conceptualized, and their implications for practice.

Conjugated polymer−titania nanoparticle hybrid films : random lasing action and ultrasensitive detection of explosive vapors

We have first demonstrated that a random laser action generated by a hybrid film composed of a semiconducting organic polymer (SOP) and TiO₂ nanoparticles can be used to detect 2,4,6-trinitrotoluene (TNT) vapors. The hybrid film was fabricated by spin-casting SOP solution dispersed with nanosized TiO₂ particles on quartz glass. The SOP in the hybrid film functioned as both the gain medium and the sensory transducer. A random lasing action was observed with a certain pump power when the size (diameter of 50 nm) and concentration (8.9 - 10¹²/cm³) of TiO₂ nanoparticles were optimized. Measurements of fluorescence quenching behavior of the hybrid film in TNT vapor atmosphere (10 ppb) showed that attenuated lasing in optically pumped hybrid film displayed a sensitivity to vapors of explosives more than 20 times higher than was observed from spontaneous emission. This phenomenon has been explained with the four-level laser model. Since the sensory transducer used in the hybrid polymer/nanoparticles system could be replaced by other functional materials, the concept developed could be extended to more general domains of chemical or environment detection.

Pedagogy of connections : findings of a collaborative action research project in outdoor and environmental education

Improving human-nature relationships is often a stated aim of outdoor education, yet this aim is not always made explicit in practice. This paper reflects on a pedagogical intervention which aims to find ways to explicitly develop students' connections with natural places through a tertiary outdoor and environmental education program. It describes the intervention process, which is guided by principles of collaborative action research. Furthermore, the intervention uses a multi-pronged teaching approach incorporating repeated visits to natural places utilizing different 'ways of knowing', weekly readings, journal writing, collaborative discussions, and others. We summarize the key findings of the research project and report that repeated visits to a natural place using different ways of knowing (e.g., historical, scientific, ecological, artistic, experiential, etc.) are influential in improving connections. We conclude with a discussion of the opportunities and dilemmas of using action research as a form of pedagogy.

Human action categorization using conditional random field

Automatic human action recognition has been a challenging issue in the field of machine vision. Some high-level features such as SIFT, although with promising performance for action recognition, are computationally complex to some extent. To deal with this problem, we construct the features based on the Distance Transform of body contours, which is relatively simple and computationally efficient, to represent human action in the video. After extracting the features from videos, we adopt the Conditional Random Field for modeling the temporal action sequences. The proposed method is tested with an available standard dataset. We also testify the robustness of our method on various realistic conditions, such as body occlusion or intersection.

Total safety culture by behavior-based safety approach

Safety is a social responsibility and providing a safe working environment is the obligation of a responsible employer. Working safely can generate direct financial benefits. However, poor safety planning and management may lead to tremendous adverse effects on cost, time and quality of a project. Statutory liabilities and heavy fines directly increase project cost; losing working hours as a result of safety incident impacts on the project programme. When tradesmen are working in an unsafe site environment, the project quality may be affected. Therefore, promoting "safety" is always the very first and utmost priority in any large scale projects. Bodley (2000) argues that culture involves what people think, what they do, and what they produce. In order to provide a safe working environment, one of the best ways is to create a safety culture within the organization, because organizational-cultural factors play an important role in safety management. Geller emphasises the importance of safety culture and further states that behaviour-based safety (BBS) is a useful approach to uphold organizational safety culture. The basic premise of BBS is self-perception and the degree of self-perception will lead to pleasant safety outcomes. This degree can be measured by level of workers' involvement. When everyone in the project is accountable to safety, they will contribute positively. This paper is a case study reviewing how BBS approach fosters safety culture leading to ultimate success. The model illustrated by the case study will be useful to analyze the organizational safety culture quantitatively.

Implications for the prevention of aggressive behavior within psychiatric hospitals drawn from interpersonal communication theory

Although interpersonal style is a defining feature of personality and personality disorder and is commonly identified as an important influence on aggressive behavior, treatment completion, and the development of an effective therapeutic alliance, it is rarely considered in practice guidelines for preventing, engaging, and managing patients at risk of aggression. In this article, the authors consider three potential applications of interpersonal theory to the care and management of patients at risk of aggression during hospitalization: (a) preventing aggression through theoretically grounded limit setting and de-escalation techniques, (b) developing and using interventions to alter problematic interpersonal styles, and (c) understanding therapeutic ruptures and difficulties establishing a therapeutic alliance. Interpersonal theory is proposed to offer a unifying framework that may assist development of intervention and management strategies that can help to reduce the occurrence of aggression in institutional settings.

Predicting breakfast consumption: a comparison of the theory of planned behaviour and the health action process approach

Purpose: 

Statistical approaches to testing the relationships of the built environment with resident-level physical activity behavior and health outcomes in cross-sectional studies with cluster sampling

To achieve valid conclusions, studies exploring associations of the built environment with residents' physical activity and health-related outcomes need to employ statistical approaches accounting for clustered data. This article discusses the following main statistical approaches: analysis of covariance, regression models with robust standard errors, generalized estimating equations, and multilevel generalized linear models. The choice of a statistical method depends on the characteristics of the study and research questions. While the first three approaches are employed to account for clustering in the data, multilevel models can also help unravel more substantive issues within a social ecological theoretical framework of health behavior.

Walking My Talk as an Intentional, Embodied, (Co)constructed Environmental Educator

Exploring the question (how) can I use personal change to inspire educational and social/cultural change, this work was embodied and action orientated with a thesis that the doing (action) is as important as the thinking and talking about it. A three-dimensional model of exploring personal change through transformative education leading to social/cultural change was employed throughout this research. A critical poststructural ecofeminist frame undergirded an autoethnographic self-study where I changed my living practices to become more sustainable while living within society, and used this as a platform for how I could become a better environmental educator and activist. I reduced my ecological footprint from 16.4HA to 1.8HA and taught a pre-service teacher course in environmental education, where I explored student resistances, power and relationships, a critique of curriculum, and personal change as a result of transformative education. One particular pedagogical strategy, the Action Learning Group Project, was developed and used to support others to undergo personal change through transformative education leading to social/cultural change. And finally, I use this work as an opportunity to undertake environmental education activism working to generate social/cultural change.

Intimate partner violence in prisoners: toward effective assessment and intervention

This paper reviews the significant challenges that are involved in the development of services for perpetrators of intimate partner violence who are in prison. It is suggested that difficulties in accurately identifying intimate partner violence, reliably assessing risk of re-offense, and in identifying offending behavior programs that meet the specific needs of prisoners have limited the development of services in this area. As a result it is argued that unique and complex victim related issues that arise during incarceration and post-release are not adequately recognized in current correctional assessment and case management systems. Four avenues for future research and service development in this area are identified, with a view to developing the role that correctional services have to play in preventing intimate partner violence.

Student perspectives on the reasons for physical violence in a Thai vocational college: an exploratory study

Physical violence in Bangkok schools has been the subject of considerable public concern in recent years and yet relatively little is known about the nature of violence perpetrated by vocational college students. This study sought to understand the reasons for such violence through a series of semi-structured interviews with 32 male students. The analysis identified revenge from previous fights as a key motivation for violence. Students described a range of different responses to threats of violence, including renting safe accommodation and concealing weapons. These findings are discussed in relation to how an understanding of cross-cultural risk factors for violence is important for the development of effective prevention strategies.