How do warnings influence cyclists' reaction to conflicts? Comparing acoustic and vibro-tactile warnings in different conflicts on a test track

An on-bike warning system has great potential to increase safety of cyclists. For an effective warning system, the implementation of warning signals is fundamental. However, more knowledge about the cyclist specific design of warnings and the influence of warnings on the cyclist is needed. To analyze the benefit of warnings in conflicts and the reaction pattern of cyclists we conducted a test-track experiment. We evaluated the data of 62 participants who were divided into three warning groups (between-subjects) and encountered different situations (within-subjects). The warning groups either received acoustic, vibro-tactile or no warnings. The situation variable consisted of three conflicts and two false warnings in the groups with warnings.We measured significantly shorter reaction times of persons who received acoustic and vibro-tactile warnings compared to the persons without warning. Furthermore, acoustic warnings led to shorter reaction times compared to vibro-tactile warnings. The reaction pattern was described by different bicycle dynamics variables. It was mostly influenced by the situation and rarely by the warning group. Based on the velocity curves and reaction times we identified learning effects describing how the warned participants adopted the warning system over the five situations.These findings indicate that a warning system offers great safety benefits to cyclists. Based on the current results, acoustic warnings are recommended when an urgent reaction is required.     

Doping in disabled elite sport: Perceptions,knowledge and opinions from the perspective of German and UK coaches

ObjectivesThe phenomenon of doping is rarely researched in Paralympic sport, especially from the coach perspective. This study responds directly to this gap in research by exploring coaches' doping-related perceptions, knowledge, and opinions of the current anti-doping system in order to inform future interventions specific to disabled elite sport contexts.MethodEleven coaches from Germany (n = 6) and the UK (n = 5) working across physiological (n = 7) and skill-based (n = 4) sport disciplines at an elite level (Paralympic, n = 10 and World Championship, n = 1) took part in semi-structured interviews. Data were analysed using abductive reflexive thematic analysis (Braun & Clarke, 2019a).FindingsFour themes were developed to capture the coaches’ perspectives. The first represents coaches’ perception that doping is an issue in Paralympic sport. The second theme shows that risk factors to dope are typically multiple and intertwined, stemming especially from financial incentives and pressure to win. Theme three captures coaches' opinion of differences in testing and education across countries due to budget, resource, or infrastructure issues. Finally, data showed that coaches prefer to refer responsibility for doping prevention to their national anti-doping organisation, rather than taking on personal responsibility for anti-doping efforts.ConclusionsAccording to the interviewed coaches, doping has the potential to be a big issue in disabled elite sport. The main risk factors of money and pressure to win (earn prize money or funding/sponsorship) are knitted together and can be additionally impacted (negatively) by a nation’s sporting system. These factors should be addressed by thinking both on an individual level (e.g., support dual careers) and a structural/policy level (e.g., aim to have minimum standards to level the global inconsistent anti-doping systems, including anti-doping education/testing). Furthermore, coaches should take their role and be proactively made aware of their responsibility in doping prevention to coach clean and protect their athletes properly.     

Manifesto for the future of work and organizational psychology

This manifesto presents 10 recommendations for a sustainable future for the field of Work and Organizational Psychology. The manifesto is the result of an emerging movement around the Future of WOP (see www.futureofwop.com), which aims to bring together WOP-scholars committed to actively contribute to building a better future for our field. Our recommendations are intended to support both individuals and collectives to become actively engaged in co-creating the future of WOP together with us. Therefore, this manifesto is open and never “finished.” It should continuously evolve, based on an ongoing debate around our professional values and behavior. This manifesto is meant, first of all, for ourselves as an academic community. Furthermore, it is also important for managers, decision makers, and other stakeholders and interested parties, such as students, governments and organizations, as we envision what the future of WOP could look like, and it is only through our collective efforts that we will be able to realize a sustainable future for all of us.     

数学学习困难初中生的中央执行系统特点

为揭示数学学习困难学生的认知过程加工特点,筛选上海111名初中生（男生46名,女生68名,平均年龄11.97岁）比较数学困难学生（55名）与数学优秀学生（56名）的中央执行系统的表现差异,通过反应停止任务和Flanker任务考察抑制能力以及注意控制能力。结果发现各种抑制和注意控制条件下,数困组学生的正确率低于数优组;在具有干扰的情况的成绩更能有效预测数学成绩;中央执行系统能力在初中总体具有上升发展趋势,数困生的发展具有波动性。因此,数学学习困难在中央执行系统中的缺损主要是对抗干扰的能力不足,而非简单的加工速度。     

Recurring auditory experience in the 28- to 34-week-old fetus

This study describes the influence of recurring auditory experience on the fetus during a transitional time period in neurobehavioral development (28-34 weeks gestation). Findings demonstrate that fetal responding can be influenced by earlier experiences and that this effect is potentially influenced by maturity of the autonomic nervous system.     

Effects of background color on detecting spot stimuli in the upper and lower visual fields

Participants were required to detect spot stimuli briefly presented to the upper, central, or lower visual fields. The stimuli were presented either on a green or a red background. Results showed that reaction time (RT) was shorter for the lower visual field (LVF) compared to the upper visual field (UVF). Furthermore, this LVF advantage was significantly reduced in the red background condition compared to the green one. A red light is known to suppress activity of the magno-dominated stream. Therefore, the LVF advantage in RT can be explained as resulting from the biased representation of the magno-dominated stream in the LVF.     

Froebel and the Rise of Educational Theory in the United States

This contribution compares entries on Friedrich Froebel and the kindergarten in German and United States histories of education from 1857 to 1933. In the American histories, Froebel appears as the great hero of education of the 19th century, whereas in the German histories, Pestalozzi is the hero. This difference in the perspectives goes back to fundamental differences in the political culture and political traditions of the two countries, which differed greatly as to the shaping of the public and private spheres. Consequently, there were also different views on public education. In the immigration society of the United States, it was important to integrate children with various language and cultural backgrounds. As families could not do this alone, public kindergartens were needed. In Germany, in contrast, Froebels idea of the kindergarten was seen as an attack on family ties, and Pestalozzi was highly esteemed, because he made home education central. The American interest in making citizens produced Froebel as the hero; the German interest in leaving the education of young children to mothers and in the family lauded Pestalozzi. This case study of the reception of Froebel in Germany and the United States illustrates the high context-dependence of the construction of educational heroes.     

Systematic Changes in Families Following Prevention Trials

A selective prevention design was applied to 238 recently separated families. Of these, 153 mothers randomly assigned to the experimental (E) group participated in 14 group sessions focused on Parent Management Treatment (PMT). Prior analyses showed that, over time, the group of families in the untreated group deteriorated in both parenting practices and in child outcomes. In keeping with the classic prevention pattern, families in the E group showed modest improvements in parenting and in child outcomes. Improvements in parenting were associated with significant reductions in problem behavior. The data showed that those mothers who improved their parenting skills during the first 12 months also showed significant reductions in maternal depression during that same interval. A cross-lagged panel analysis showed that a reduction in maternal depression during the first year of the study was a significant predictor of maintenance or improvements over the next 18 months. The findings are consistent with the concept of the family as a system.     

重构我国医德规范体系论要

由于我国现有医德规范体系构成混乱、规定抽象、功能低下,已严重不适应医学发展尤其是医德建设的现实需要,因此,亟需对现有医德规范体系加以解构,并在解决人道理念与功利理念相统一、传统规范体系现代化与外来规范体系本土化相统一、先进性要求与普遍性要求相统一、宣传教育功能与实际调节功能相统一等关键问题中,按照"一个原则、六个准则、十二个范畴"的总体框架进行科学、合理的重构.     

Experiencing positive affect and negative affect during stress: relationships to cardiac reactivity and to facial expressions

We examined the relationship between experienced positive/negative affect and cardiac reactivity and facial muscle movements during laboratory tasks with different demands. Heart rate, respiratory sinus arrhythmia, pre-ejection period, and facial electromyography were measured during startle, mental arithmetic, reaction time task, and speech task. The results revealed that individuals experiencing high levels of positive affect exhibited more pronounced parasympathetic, heart rate, and orbicularis oculi reactivity than others. Individuals who experienced high levels of negative affects during the tasks showed higher corrugator supercilii responses. Men and women showed slightly different response patterns. To conclude, cardiac reactivity may be associated with positive involvement and enthusiasm in some situations and all reactivity should not automatically be considered as potentially pathological.