Training to increase safe tray carrying among cocktail servers

We evaluated the effects of training on proper carrying techniques among 3 cocktail servers to increase safe tray carrying on the job and reduce participants' risk of developing musculoskeletal disorders. As participants delivered drinks to their tables, their finger, arm, and neck positions were observed and recorded. Each participant received individual safety training that focused on proper carrying positions and techniques after baseline data were collected. A multiple baseline design across participants was used to evaluate the effects of the safety training. Results showed that the training increased safe carrying for all 3 participants.     

Explorations of participants’ experiences of a Personal Development Group held as part of a counselling psychology training group: Is it safe in here?

This paper aims to extend understanding of student counsellors’ perceptions of participation in personal development (PD) groups during training. PD participants were invited to record their experiences in relation to these groups over a three month period. The accounts were then subjected to thematic analysis. Safety was found to be a dominant theme–both in the sense of how the group felt safe for them and also how the safety was threatened. These concepts are discussed and lessons the data has offered in terms of good practice in facilitating PD groups during counsellor training programmes are elucidated.     

Can organisational safety climate and occupational stress predict work-related driver fatigue?

Road crashes are a significant cause of work-related injury and death. Driver fatigue is thought to cause 20–30% of fatal crashes. The current study utilised a survey to examine the relationship between safety climate, occupational stress and work-related driver fatigue. Drivers (n = 219) from two government organisations responded to items from the job-related tension scale [Kahn, R. L., Wolfe, D. M., Quinn, R. P., & Snoek, J. D. (1964). Organisational stress: Studies in role conflict and ambiguity. Malabar, FL: Krieger Publishing], safety climate questionnaire [Glendon, A., & Litherland, D. (2001). Safety climate factors, group differences and safety behaviour in road construction. Safety Science, 39, 157–188] and purpose-designed items on fatigue-related behaviour. Outcome measures were current self-reported, fatigue-related behaviour and self-reported ‘near (crash) misses’ during the previous 6 months. Together, occupational stress and safety climate predicted fatigue-related behaviour, accounting for 29% of the variance over and above that explained by control variables. Further, logistic regression revealed occupational stress and safety climate to be significant predictors of fatigue-related near misses. Safety climate emerged as a stronger predictor of both fatigue-related behaviour and near misses than occupational stress. Results suggest that organisations can play a part in improving the safety-related behaviours of their workforce through attention to safety climate and occupational stress.     

航线驾驶安全行为多维评价量表的构建

结合现代航线驾驶工作特性及CRM和TEM模型基础上, 通过文献分析、专家访谈和开放式问卷调查, 筛选出现代航线飞行员驾驶安全所必备的27种关键行为特征, 构成中国文化背景下航线驾驶安全行为评价量表的检测项目。对118名中国航线飞行员测评数据的验证性因素分析表明, 由自动化系统认识、领导和管理、情境意识与决策、人际交流与合作技能组成的四维模型优于其他假设模型, 且在四个飞行阶段中均具有良好的信度和结构效度。以其中86名飞行员的安全绩效考核(安全规章、飞行作风、飞行技能和机组管理)数据和飞行员在每个飞行阶段的驾驶安全行为总体表现为效标变量, 以航线驾驶安全行为评价量表四个维度上的驾驶行为特征为预测变量分别进行层次回归分析, 结果表明: 航线驾驶安全行为多维评价量表具有良好的预测效度; 四个维度变量对维护不同飞行阶段的驾驶安全行为分别具有显著的贡献性, 且这种贡献性因飞行阶段的任务不同而有所差异。航线安全驾驶行为多维评价量表的构建, 不仅为航线飞行员安全驾驶行为规范性评估、机组驾驶行为问题诊断以及安全绩效考核提供了一套客观有效的评价工具, 而且也为有针对性的设计航线飞行员选拔模式和有效实施机组人员非技术性技能/CRM训练提供了一个良好的理论基础。     

Impact of a comprehensive safety program on bicycle helmet use among middle-school children

A bicycle helmet program was evaluated in three middle schools using a multiple baseline across schools design. Two of the three schools had histories of enforcement of helmet use. During baseline many students riding their bikes to and from school did not wear their helmets or wore them incorrectly. A program that consisted of peer data collection of correct helmet use, education on how to wear a bicycle helmet correctly, peer goal setting, public posting of the percentage of correct helmet use, and shared reinforcers, all of which were implemented by the school resource officer, increased afternoon helmet use and afternoon correct helmet use in all three schools. Probe data collected a distance from all three schools indicated that students did not remove their helmets once they were no longer in close proximity to the school, and probe data collected in the morning at two of the schools showed that the behavior change transferred to the morning.     

Finding a safe place to cross the road: the effect of distractors and the role of attention in children's identification of safe and dangerous road‐crossing sites

Negotiating traffic requires the ability to focus attention on the traffic environment and ignore distracting stimuli. The aims of this study were (1) to examine the effect of distractors on children's ability to identify safe and dangerous road‐crossing sites and (2) to examine the relationship between identification of safe/dangerous sites and attention (selective attention, attention switching, sustained attention and divided attention). Participants were 88 children (aged between 6 and 11 years) and 29 adults. Ability to identify safe and dangerous road‐crossing sites was assessed using computer presentations of sites with and without visual and auditory distractions. Measures of attention were examined using the Test of Everyday Attention (child and adult versions). The ability to identify safe and dangerous road‐crossing sites and performance on the attention tests were found to improve with increasing age. Correct identification of safe/dangerous road‐crossing sites was related to selective attention and divided attention for children but not for adults. Road safety training should take into account the development of these skills. Copyright © 2007 John Wiley & Sons, Ltd.     

Still No Evidence For Temporally Extended Shock-frequency Reduction As A Reinforcer.

There is no consensus and very little overlap in the criticisms of my target article. Because the primary consequences of avoidance behavior are by definition alterations in the distribution of shocks in time, any theory about the reinforcement of such behavior necessarily must begin with that dimension. However, the safety‐signal version of two‐process theory calls on positively and negatively correlated stimuli, including the responses themselves serving as stimuli, to transmit the effects of those alterations to the relevant behavior. Meanwhile, the Herrnstein—Hineline single‐process theory hypothesizes an additional source of reinforcement: a direct effect of reduction in the density of shock over some extended period of time. I can find no data that selectively support that hypothesis.     

伪忽视行为表现与神经基础及交通驾驶应用

伪忽视是健康个体存在轻微偏左的不对称空间注意。影响这个现象的因素主要包括刺激材料、年龄、认知负荷和知觉负荷等。其中, 眼动搜索习惯曾经被认为是伪忽视现象的主要因素, 甚至提出伪忽视是眼动偏好现象。但是, 最近文献研究普遍认为, 伪忽视不是眼动行为, 而是注意特质。近10年的大脑神经层面的证据发现, 右脑腹侧注意网络对左侧空间注意偏好有较大的贡献, 而且在神经传导束的证据中也发现右脑大纵束二型对左侧空间注意的激活程度高于其他两种类型的传导束。另外, 注意偏好的时间分辨率研究发现, 注意的左侧空间偏向发生在注意发生后的100~200 ms之内, 眼动搜索时间则是在1500 ms之内出现最大左偏。该现象的应用研究主要体现在交通驾驶员的注意能力和驾驶视觉搜索模式的关系研究。研究意义在于为安全交通提供两条原则, 首先, 道路交通驾驶环境设置要满足驾驶员的注意特质的需求; 其次, 通过合理干预, 可以抑制视觉搜索习惯, 培养安全的驾驶搜索模式。     

Objectivity and reliability

Scanlon’s Being Realistic about Reasons is a beautiful book – sleek, sophisticated, and programmatic. One of its key aims is to demystify knowledge of normative and mathematical truths, realistically construed – i.e. construed, roughly, as being true relevantly independent of minds and languages, when interpreted at face-value. In this article, I develop an epistemological problem that Scanlon fails to explicitly address. I argue that his ‘metaphysical pluralism’ can be understood as a response to that problem. However, it resolves the problem only if it undercuts the objectivity of normative and mathematical inquiry.     

Adverse Housing Conditions and Early‐Onset Delinquency

Housing constitutes an important health resource for children. Research has revealed that, when housing conditions are unfavorable, they can interfere with child health, academic performance, and cognition. Little to no research, however, has considered whether adverse housing conditions and early‐onset delinquency are significantly associated with one another. This study explores the associations between structural and non‐structural housing conditions and delinquent involvement during childhood. Data from the Fragile Families and Child Wellbeing Study (FFCWS) were employed in this study. Each adverse housing condition was significantly associated with early‐onset delinquency. Even so, disarray and deterioration were only significantly linked to early delinquent involvement in the presence of health/safety hazards. The predicted probability of early‐onset delinquency among children exposed to housing risks in the presence of health/safety hazards was nearly three times as large as the predicted probability of early‐onset delinquency among children exposed only to disarray and/or deterioration, and nearly four times as large as the predicted probability of early‐onset delinquency among children exposed to none of the adverse housing conditions. The findings suggest that minimizing housing‐related health/safety hazards among at‐risk subsets of the population may help to alleviate other important public health concerns—particularly early‐onset delinquency. Addressing household health/safety hazards may represent a fruitful avenue for public health programs aimed at the prevention of early‐onset delinquency.