Multimedia Benchmarking Analysis for Three Risk Assessment Models: RESRAD, MMSOILS, and MEPAS

This paper is one in a series that describes results of a benchmarking analysis initiated by the Department of Energy (DOE) and the United States Environmental Protection Agency (EPA). An overview of the study is provided in a companion paper by Laniak et al. presented in this journal issue. The three models used in the study—RESRAD (DOE), MMSOILS (EPA), and MEPAS (DOE)—represent analytically-based tools that are used by the respective agencies for performing human exposure and health risk assessments. Both single media and multimedia benchmarking scenarios were developed and executed. In this paper, the multimedia scenario is examined. That scenario consists of a hypothetical landfill that initially contained uranium-238 and methylene chloride. The multimedia models predict the fate of these contaminants, plus the progeny of uranium-238, through the unsaturated zone, saturated zone, surface water, and atmosphere. Carcinogenic risks are calculated from exposure to the contaminants via multiple pathways. Results of the tests show that differences in model endpoint estimates arise from both differences in the models' mathematical formulations and assumptions related to the implementation of the scenarios.     

Gambling-related Irrational Beliefs in the Maintenance and Modification of Gambling Behaviour

Abstract

The present study investigated a primary assumption of the cognitive theory of problem gambling, that gambling-related irrational beliefs lead directly to problematic gambling behaviour. Participants (N =114) received a message designed to increase their illusion of control (IOC) over a computerised roulette game, a message designed to decrease their IOC, or a neutral message. Participants then played the game, during which their gambling behaviour was recorded and irrational beliefs were measured. Based on the cognitive model, it was expected that those receiving the IOC enhancement message would evidence greater levels of irrational beliefs and correspondingly more intense gambling behaviour and that those in the IOC reduction condition would show decreased levels of both irrational beliefs and behaviour. However, although conditions differed as to levels of irrational beliefs, there were no significant differences in gambling behaviour. Results are discussed and implications of the results on the cognitive theory of problematic gambling are explored.     

‘Like waking up in a Franz Kafka novel’: Service users' experiences of the child protection system when domestic violence and acrimonious separations are involved

The challenges that arise in respect of child abuse reports made in the context of domestic violence and/or acrimonious separation have been the subject of recent academic discussion. This paper adds a service user perspective to the debate and reports on the findings from a study conducted in the Republic of Ireland. In addition to the previously established evidence about such cases, it demonstrates the level of powerlessness and frustration experienced by families who found it difficult to have their needs heard or met. It also illustrates the very detrimental emotional impact on children and parents who frequently encountered indifference as well as insensitive and gendered responses from child protection staff. The findings indicate that mainstream statutory child protection services do not have the capacity to deal with these complex cases, and advocates the adoption of alternative approaches. Importantly, the study demonstrates the necessity to pay attention to the views of service users in developing an appropriate response.