Hail to the chief! Leadership and structural change in the level of consensus on the High Court of Australia

This article identifies structural breaks in dissenting and single opinions on the High Court of Australia and uses a recent method proposed by Caporale and Grier (2002) to examine the effect of leadership on variations in the dissent rate between 1904 and 2001. Although there has been much speculation about the effectiveness of different Chief Justices in obtaining consensus on the Court, to this point most of the evidence has been anecdotal. Our main findings are that the structural breaks that we identify coincide with major turning points in the leadership of the Court and that leadership has been important in explaining variations in the proportion of dissenting opinions on the Court.

Socio-cultural messages, body image, and body change strategies in men

The thesis found that men received information about the ideal male body from perceived media messages and peers through encouragement, teasing, or modelled behaviours. Body mass index (BMI) also influenced participant's perceptions of their body-image and the strategies they used to change their shape. Sexual partners generally held positive views of men's body shape and weight. The portfolio examines the barriers experienced by individuals with co-occuring disorders within the current treatment system, by analysing four case studies.

Genre theory and language change in a community of practice

Business letters are complex sites of interaction. Discussions of genre theory from different disciplinary perspectives (psychology, applied linguistics, rhetoric) highlight tension between stability and change in writing as a social activity. The research extends the use of ethnographic methodology and Communities of Practice in examining writing and a writing community.

Study of culture and organisational change at a TAFE Institute

Barton Institute of Technical and Further Education, a metropolitan Victorian TAFE institute was chosen for the case study. The research methodology included designing and administering a survey and selecting a number of performance indicators.

Integrating simulated annealing and delta technique for constructing optimal prediction intervals

This paper aims at developing a new criterion for quantitative assessment of prediction intervals. The proposed criterion is developed based on both key measures related to quality of prediction intervals: length and coverage probability. This criterion is applied as a cost function for optimizing prediction intervals constructed using delta technique for neural network model. Optimization seeks out to minimize length of prediction intervals without compromising their coverage probability. Simulated Annealing method is employed for readjusting neural network parameters for minimization of the new cost function. To further ameliorate search efficiency of the optimization method, parameters of the network trained using weight decay method are considered as the initial set in Simulated Annealing algorithm. Implementation of the proposed method for a real world case study shows length and coverage probability of constructed prediction intervals are better than those constructed using traditional techniques.

Teaching and learning about force with a representational focus : pedagogy and teacher change

A large body of research in the conceptual change tradition has shown the difficulty of learning fundamental science concepts, yet conceptual change schemes have failed to convincingly demonstrate improvements in supporting significant student learning. Recent work in cognitive science has challenged this purely conceptual view of learning, emphasising the role of language, and the importance of personal and contextual aspects of understanding science. The research described in this paper is designed around the notion that learning involves the recognition and development of students’ representational resources. In particular, we argue that conceptual difficulties with the concept of force are fundamentally representational in nature. This paper describes a classroom sequence in force that focuses on representations and their negotiation, and reports on the effectiveness of this perspective in guiding teaching, and in providing insight into student learning. Classroom sequences involving three teachers were videotaped using a combined focus on the teacher and groups of students. Video analysis software was used to capture the variety of representations used, and sequences of representational negotiation. Stimulated recall interviews were conducted with teachers and students. The paper reports on the nature of the pedagogies developed as part of this representational focus, its effectiveness in supporting student learning, and on the pedagogical and epistemological challenges negotiated by teachers in implementing this approach.

The role of partners in shaping the body image and body change strategies of adult men : partners and male body image

The current study examined the relationship between perceived messages about the bodies of adult men from their sexual partners and the actual body image of these men. Interviews were conducted among 38 middle-aged men. Feedback from partners was generally complimentary, and the men were generally positive about their body image. Partners were seen to be more focused on a healthy body rather than a physically attractive body. The implications of these findings for better understanding the social influence on adult men to obtain a healthy body weight are discussed.

Impact of a healthy body image program among adolescent boys on body image, negative affect and body change strategies

This study evaluated the effectiveness of a healthy body image program. In total, 421 adolescent boys completed a five-session intervention program or a wait list control group. There were no differences between the intervention and the control group at post-intervention or any of the follow-up times. Boys in the intervention group who were one standard deviation above the mean on body dissatisfaction at baseline, demonstrated a reduction in negative affect in the intervention group at post-test and 6 months follow-up. Prevention programs need to target boys who are at risk of adopting health risk behaviors, rather than being universally applied.

Psychosocial correlates of body image and body change behaviors among Malaysian adolescent boys and girls

This study used a psychosocial framework to investigate the relationships between BMI, body dissatisfaction, body change behaviors and mental health/behavioral problems amongst a sample of 513 Malay, Indian and Chinese adolescent boys and girls in Malaysia who completed questionnaires assessing these variables. Expected gender differences were not found in relation to body dissatisfaction or engagement in strategies to increase weight, but boys reported greater engagement in strategies to increase muscles. Relationships between body dissatisfaction and engagement in body change behaviors and mental health/behavioral problems varied across race and gender. These findings suggest that the psychosocial framework is a useful way to conceptualise body dissatisfaction and related behaviors, and that caution should be exercised in generalising findings across gender and culture.