A Shelter-Based Stress-Reduction Group Intervention Targeting Self-Esteem, Social Competence, and Behavior Problems Among Homeless Children

It has been estimated that families with children now account for 40% of the population who become homeless. Given the consistency of research showing the potentially damaging effects of homelessness as a stressor upon the social and emotional development of children, the question of importance is how to best intervene to reduce the likelihood or severity of such possible negative consequences. The approach taken here involved the development of a Shelter-Based Stress-Reduction Group Intervention Targeting Self-Esteem and Behavior Problems Among Homeless Children.Data were collected on 52 elementary-school–age children from family-shelter facilities in Central Florida. The child's level of psychosocial functioning was assessed using the Coopersmith Self-Esteem Inventory (CSEI) and Achenbach's Child Behavior Checklist (CBCL). Although the repeated measures ANOVA techniques applied to those subjects were nonsigni-ficant, the relatively small sample size in study conditions led to consideration of the magnitude of effect sizes obtained in treatment and comparison groups. The changes in the intervention group's mean scores on key psychosocial outcome variables of interest were consistent with hypotheses, providing suggestive evidence of the potential utility of stress management training.     

Mixed Results, Lousy Process: the Management Experience of Organizational Change

This paper reports the findings of a survey of 92 managers, from 14 public and 14 private-sector organizations. The aim was to explore the experience of change, extending the findings of a previous study (Buchanan, Claydon and Doyle, 1999). The survey addressed six themes: communication, evaluation, learning, attitudes and relationships, implementation and change and continuity. Overall, the results present a bleak picture of the process and outcomes of contemporary change. Most managers claim that change responsibility affords valuable personal learning. However, recent change has also been accompanied by stress, work intensification, command and control and management–employee distrust. A comparison of public and private–sector responses suggests that the experience of change in the public sector has been more pressured than in the private sector. Comparison of responses by management level indicates that senior managers are more likely to hold positive views of the change process and its outcomes. Explanations for these differences in experience and perception are considered, along with the implications. It is concluded that an adequate theory of organizational change must address the contradictions and tensions in the lived experience of those implicated, and that effective practice should consider the linkage of change implementation with organizational learning mechanisms which, on this evidence, are absent.     

Contingency Learning and Reactivity in Preterm and Full‐Term Infants at 3 Months

Learning difficulties in preterm infants are thought to reflect impairment in arousal regulation. We examined relationships among gestational age, learning speed, and behavioral and physiological reactivity in 55 preterm and 49 full‐term infants during baseline, contingency, and nonreinforcement phases of a conjugate mobile paradigm at 3 months corrected age. For all infants, negative affect, looking duration, and heart rate levels increased during contingency and nonreinforcement phases, whereas respiratory sinus arrhythmia (RSA, an index of parasympathetic activity) decreased and Cortisol did not change. Learners showed greater RSA suppression and less negative affect than nonleamers. This pattern was particularly evident in the preterm group. Overall, preterm infants showed less learning, spent less time looking at the mobile, and had lower Cortisol levels than full‐term infants. Preterm infants also showed greater heart rate responses to contingency and dampened heart rate responses to nonreinforcement compared to full‐term infants. Findings underscore differences in basal and reactivity measures in preterm compared to full‐term infants and suggest that the capacity to regulate parasympathetic activity during a challenge enhances learning in preterm infants.     

Collaborate or Compete: Examining Manufacturers' Replacement Strategies for a Substance of Concern

The recent proliferation of media reports on substances of concern has increased consumer fears, sparked scientific debate, and highlighted the need for stronger chemical regulations. When a substance of concern is identified (e.g., bisphenol‐A (BPA) in reusable water bottles), manufacturers face difficult trade‐offs in deciding whether to proactively replace the substance in their products or to defer replacement and wait to see if regulation occurs. In this study, we examine when opportunities exist for manufacturers to avoid competitively replacing (i.e., making their replacement decisions on their own), and instead, collaborate to replace a substance of concern. We model a vertically differentiated market consisting of a high‐end manufacturer and a low‐end manufacturer, both of whom sell a product that contains a substance of concern. Our analysis investigates how market dynamics (competition and consumer preferences) and external factors (replacement costs and regulatory uncertainty) influence manufacturers' collaboration, replacement, and pricing decisions. We find that when the manufacturers do not collaborate, the high‐end manufacturer can use the presence of a substance of concern to dominate the market by capturing more demand and often charging a higher price for his product than the low‐end manufacturer. Collaboration is possible when there is either a shared fixed cost savings for both manufacturers or an opportunity for the low‐end manufacturer to benefit his competitive position by motivating the high‐end manufacturer to collaborate. From a consumer perspective, although collaboration reduces consumer exposure to the substance of concern, it can decrease consumer surplus when the replacement substance is very expensive.     

ARE WE TOO BUSY TO VOLUNTEER? THE RELATIONSHIP BETWEEN TIME AND VOLUNTEERING USING THE 1997 ABS TIME USE DATA

Time availability is a key concept in relation to volunteering, leading to organisations and governments targeting those outside paid work as a potential source of volunteers, it may be that factors such as a growth in female participation in the labour market and an increase in work hours will lead to more people saying they are simply too busy to volunteer. This paper discusses how social and economic change, such as changing work patterns, are impacting on time availability. Using the 1997 ABS Time Use data, it identifies a predictive model of spare time by looking at demographic, life stage and employment related variables. Results confirm that those outside paid work, particularly the young, males and those without partners or children, are the groups most likely to have time to spare. These groups do not currently report high rates of volunteering. The paper concludes by questioning the premise that people will volunteer simply because they have time to spare. This is just one component of a range of motivations and factors that influence the decision to volunteer.     

Inequalities in child welfare intervention rates: the intersection of deprivation and identity

Child welfare systems internationally exhibit very large inequalities in a variety of dimensions of practice, for example, in rates of child protection plans or registrations and out‐of‐home care. Previous research in the midlands region of England (Bywaters; Bywaters et al.) has detailed key aspects of the relationship between levels of neighbourhood deprivation and intervention rates. This paper reports further evidence from the study examining the intersection of deprivation with aspects of identity: gender, disability, ethnicity and age. Key findings include a decreasing gender gap and a decreasing proportion of children in need reported to be disabled as deprivation increases. The data challenge the perception that black children are more likely than white to be in out‐of‐home care, a finding that only holds if the much higher level of deprivation among black children is not taken into account. Similarly, after controlling for deprivation and age, Asian children were found to be up to six times less likely to be in out‐of‐home care. The study requires replication and extension in order that observed inequalities are tested and explained. Urgent ethical, research, policy and practice issues are raised about child welfare systems.     

Child protection practitioners: Including children in decision making

This article presents findings from a study with 467 child protection practitioners in Australia to determine their practice responses and views on children's participation. The practitioners, recruited from 5 state jurisdictions, completed an online survey responding to case studies designed to determine the extent to which they would seek and include children's perspectives in decision making, and their confidence in talking to children. We report on practitioners' responses to a case study of a 5‐year‐old girl with suspicious bruising where the mother reports domestic violence. Based on previous research, it was hypothesized that the child's young age would lead to low levels of confidence in consulting with the child and giving weight to her perspective. In contrast to the findings of other research, our results show that almost all workers report that they would speak with the child, would be confident doing so, and would give weight to the child's perspective. Our discussion explores the potential reasons for the difference in these findings compared with other research, including the experience of practitioners, increased child‐centred policy in Australia, multiple understandings of participation, and variation in children and practitioner views of participation.     

Early warning CUSUM plans for surveillance of negative binomial daily disease counts

Automated public health surveillance of disease counts for rapid outbreak, epidemic or bioterrorism detection using conventional control chart methods can be hampered by over-dispersion and background (‘in-control’) mean counts that vary over time. An adaptive cumulative sum (CUSUM) plan is developed for signalling unusually high incidence in prospectively monitored time series of over-dispersed daily disease counts with a non-homogeneous mean. Negative binomial transitional regression is used to prospectively model background counts and provide ‘one-step-ahead’ forecasts of the next day's count. A CUSUM plan then accumulates departures of observed counts from an offset (reference value) that is dynamically updated using the modelled forecasts. The CUSUM signals whenever the accumulated departures exceed a threshold. The amount of memory of past observations retained by the CUSUM plan is determined by the offset value; a smaller offset retains more memory and is efficient at detecting smaller shifts. Our approach optimises early outbreak detection by dynamically adjusting the offset value. We demonstrate the practical application of the ‘optimal’ CUSUM plans to daily counts of laboratory-notified influenza and Ross River virus diagnoses, with particular emphasis on the steady-state situation (i.e. changes that occur after the CUSUM statistic has run through several in-control counts).     

Everyday incivility: towards a benchmark

Commonplace incivility is a topic of longstanding interest within social theory, perhaps best exemplified by Goffman's studies of the interaction order. Nevertheless we know very little about its distribution and expression in everyday life. Current empirical work is dominated by criminological agendas. These tend to focus on more serious and illegal activities rather than minor deviant acts that are simply inconsiderate or rude. The paper reports findings from a focus group study conducted in Melbourne, Australia that set out to benchmark everyday incivilities. The results suggest that perpetrators of incivility have a surprisingly broad social distribution as does the range of locales that might be characterised as ‘high risk’. Turning to the work of Putnam and Wolfe, we call for a research focus on low‐level incivilities as key symptoms of the state of civic virtue and the strength of moral ties within civil society. Drawing on Virilio, Bauman and Durkheim, it is suggested that the experience of incivility is underpinned by the growth of freedom and movement in contemporary urban settings, and has ambivalent implications that not only invoke boundary maintenance and retreatism, but also offer the possibility for boundary expansion and tolerance of difference.     

Control variates and importance sampling for efficient bootstrap simulations

Importance sampling and control variates have been used as variance reduction techniques for estimating bootstrap tail quantiles and moments, respectively. We adapt each method to apply to both quantiles and moments, and combine the methods to obtain variance reductions by factors from 4 to 30 in simulation examples.We use two innovations in control variates—interpreting control variates as a re-weighting method, and the implementation of control variates using the saddlepoint; the combination requires only the linear saddlepoint but applies to general statistics, and produces estimates with accuracy of order n ^-1/2 B ^-1, where n is the sample size and B is the bootstrap sample size.We discuss two modifications to classical importance sampling—a weighted average estimate and a mixture design distribution. These modifications make importance sampling robust and allow moments to be estimated from the same bootstrap simulation used to estimate quantiles.