Children's Creative Collaborations: The Importance of Friendship when Working Together on a Musical Composition

This study examined the social processes involved in children's collaborative musical compositions. The communication (verbal and musical) between same-gender pairs of 11–12 year olds was analysed using measures of the relative distribution of transactive and non-transactive elements. Results suggested that mutual friendship pairs were characterised by different communication patterns in both their music and talk compared to those of non-friend pairs, with significantly more transactive communication in both channels. Previous experience of instrumental lessons also had an effect, with experienced children playing and talking in a more transactive way than those without such experience. On teacher's ratings of the final composition, those produced by pairs of friends received significantly higher scores than those of non-friends. Multiple regression analyses suggested that this final score could be predicted from the amount of transactive communication observed between the children. The results indicate some of the ways in which friendship influences the collaborative process in a creative, open-ended task by facilitating a high level of mutual engagement during the interaction and with the outcome of higher quality compositions.     

Designing Graphs to Communicate Risks: Understanding How the Choice of Graphical Format Influences Decision Making

Previous research suggests that the choice of graphical format for communicating risk information affects both understanding of the risk magnitude and the likelihood of acting to decrease risk. However, the mechanisms through which these effects work are poorly understood. To explore these mechanisms using a real‐world scenario, we examined the relative impact of two graphical displays for depicting the risk of exposure to unexploded ammunition during potential land redevelopment. One display depicted only the foreground information graphically (a bar graph of the number of people harmed), and a second depicted the foreground and background graphically (a stacked bar graph representing both the number harmed and at risk). We presented 296 participants with either the foreground‐only or the foreground and background graphical display and measured a broad set of outcome variables, examining (1) the graphical display effect on each of the outcome measures and (2) the pathways by which any display effects work to influence decision making. We found that the foreground‐only graphical display increased perceived likelihood and experienced fear, which produced greater worry, which in turn increased risk aversion. In addition, a positive evaluation of the communication materials increased support for policies related to land redevelopment, whether those policies were risk taking or risk mitigating. Finally, the foreground‐only graphical display decreased understanding of the risk magnitude, showing that approaches to accomplish one risk communication goal (promoting risk‐averse decisions) may do so at the expense of another goal (increasing understanding).     

The Effects of Urban Form on Ambient Air Pollution and Public Health Risk: A Case Study in Raleigh,North Carolina

Since motor vehicles are a major air pollution source, urban designs that decrease private automobile use could improve air quality and decrease air pollution health risks. Yet, the relationships among urban form, air quality, and health are complex and not fully understood. To explore these relationships, we model the effects of three alternative development scenarios on annual average fine particulate matter (PM_2.5) concentrations in ambient air and associated health risks from PM_2.5 exposure in North Carolina's Raleigh‐Durham‐Chapel Hill area. We integrate transportation demand, land‐use regression, and health risk assessment models to predict air quality and health impacts for three development scenarios: current conditions, compact development, and sprawling development. Compact development slightly decreases (?0.2%) point estimates of regional annual average PM_2.5 concentrations, while sprawling development slightly increases (+1%) concentrations. However, point estimates of health impacts are in opposite directions: compact development increases (+39%) and sprawling development decreases (?33%) PM_2.5‐attributable mortality. Furthermore, compactness increases local variation in PM_2.5 concentrations and increases the severity of local air pollution hotspots. Hence, this research suggests that while compact development may improve air quality from a regional perspective, it may also increase the concentration of PM_2.5 in local hotspots and increase population exposure to PM_2.5. Health effects may be magnified if compact neighborhoods and PM_2.5 hotspots are spatially co‐located. We conclude that compactness alone is an insufficient means of reducing the public health impacts of transportation emissions in automobile‐dependent regions. Rather, additional measures are needed to decrease automobile dependence and the health risks of transportation emissions.     

Consistent Motives for Inter-Family Transfers: Simple Altruism

The influence of the comparative economic status of elderly parents and their adult children on inter-vivos transfers and inheritance was analyzed. The 1992 Wisconsin Longitudinal Study interview provides new evidence that transfers from parents to mid-life adults are motivated by simple altruism, in contrast to other recent studies that support compensatory altruism or exchange motives. These results are based on income tax records for parents from the late 1950's and respondents' earnings reports for the mid-70's, and within-family analyses of sibling pairs and their income reports in the early 1990's. A policy implication is that government income redistribution will not affect how elderly parents provide financial transfers to their adult children.     

Supervisor–Student Relations: Examining the Spectrum of Conflicts of Interest in Bioscience Laboratories

Much attention has been given to financial conflicts of interest (COIs) in bioscience research. Yet to date, surprisingly little attention has focused on other COIs that arise in supervisor--student relations. We examine a spectrum of related situations, ranging from standard graduate supervision through to dual relationships sometimes found in research with commercial potential. We illustrate some of the less-obvious factors that can bias supervisory judgment, and situate financial COI along a spectrum of forces that are deserving of recognition. We conclude by providing two sets of recommendations: one for individual supervisors, and the other for institutions and policy-makers.     

Analysing drug abuse with British Crime Survey data: modelling and questionnaire design issues

We use the British Crime Survey (BCS) to analyse the demand for illicit drugs and the implications of drug use for the probability of subsequent unemployment. We demonstrate that the BCS questionnaire has a serious design flaw for this purpose, and we propose some simple modifications. We also develop a modelling technique that is suitable for existing BCS data and apply it to the 1994 and 1996 samples. We find evidence that soft drug use is associated with a greatly increased probability of later hard drug use and that past drug use is associated with increased probabilities of unemployment.