Explicit or implicit situation awareness? Measuring the situation awareness of train traffic controllers

Previous research on situation awareness (SA) predominantly focused on its explicit, reasoned, conscious features rather than on the implicit, intuitive, unconscious aspects that are often identified with expert operators. This research investigated implicit levels of SA of train traffic controllers (TTCs) in order to contribute to the body of knowledge on rail human factors research and SA. A novel approach was used to uncover levels of implicit SA through a set of three analyses: (1) fairly low SAGAT values with correlations between SAGAT scores and multiple performance indicators; (2) negative correlations between work experience and SAGAT scores; and (3) structurally lower level-1 SA (perception) scores in comparison to level-2 SA (comprehension) scores in accordance with Endsley’s three-level model. Two studies were conducted: A pilot study – which focused on SA measurements with TTCs in a monitoring mode (N = 9) – and the main study, which involved TTCs from another control center (N = 20) and three different disrupted conditions. In the pilot study, SA was measured through the situation-awareness global assessment technique (SAGAT), perceived SA and observed SA, and performance was measured through punctuality and unplanned stops of trains before red signals. In the main study, SA was measured through SAGAT, and perceived SA and multiple performance indicators, such as arrival and departure punctuality and platform consistency, were assessed. In both studies, the set of three analyses showed consistent and persistent indications of the presence of implicit SA. Endsley’s three-level model and related SAGAT method can be constrained by the presence of these intuitive, unconscious processes and inconsistent findings on correlations between SAGAT scores and performance. These findings provide insights into the SA of TTCs in the Netherlands and can support the development of training programs and/or the design of a new traffic management system.     

Affective priming of perceived environmental restorativeness

Research into the perceived restorativeness of environments tends to focus on the Kaplans' Attention Restoration Theory at the expense of the affective considerations of Ulrich's psychoevolutionary model. To better understand the role of emotion, this study used contextual text‐based primers (newspaper articles) to manipulate participants' affective state (positive or negative) prior to them rating different environments using the Restorative Components Scale. Sixty‐nine participants completed the web‐based study, being pseudo‐randomly allocated to the positive‐ or negative‐prime condition before rating three natural and three urban environments. Natural environments were rated as more restorative than urban, with negative‐priming giving higher mean ratings for all environments. This effect was overall statistically significant for two components (Being Away and Fascination), but only Fascination showed a significant interaction of affective‐prime and environment, a larger effect being seen for natural environments. Results are discussed in terms of current understanding of the interrelationship between attentional and affective processes.     

GLOBAL VISIONS AND COMMON GROUND: BIODEMOCRACY,POSTMODERN PRESSURES,AND THE EARTH CHARTER

The theme of this article is a rise in notions of a planetary community, and the tensions this evokes in global‐local and universal‐contextual debates. The primary focus is the realization that new visions are needed to respond to ecological dilemmas in a culturally diverse yet global world and interconnected Earth. Of the many ways to discuss this, I first consider the growing interest in and expansion of biodemocracy as a way to combine these dimensions. Insights and issues from postmodern perspectives follow this, surveying the suspicion of what lurks behind “global.” The next segment turns to ecological postmodernists who realize that a unifying path must be found for a viable planetary future. A brief and final section considers the Earth Charter to be an initiative responsive to postmodern pressures, and yet seeking a global vision and common ground for an emerging world community.     

THE EARTH CHARTER AND BIODEMOCRACY IN THE TWENTY‐FIRST CENTURY

This essay introduces the themes that motivate the three articles that follow. Their common aim is to explore the connections between the Earth Charter and the concept of biodemocracy with the intention of highlighting ways of thinking about the relationship between science, religion, and the environment in the twenty‐first century. Informed by the science of ecology and written by scholars of religion, the articles included here seek to integrate movements and ideas as diverse as postmodern thought, the much‐debated thought of Lynn White, jr. (his preferred spelling), and the synergy emerging between the Earth Charter and Journey of the Universe.     

家庭社会经济地位对幼儿词汇理解的影响：多重中介效应分析

摘 要 目的：探讨家庭阅读环境（HLE）和电子媒介暴露在家庭社会经济地位（SES）和幼儿词汇理解间的中介作用。 方法：使用家庭基本信息调查表、家庭阅读环境问卷、皮博迪图片词汇测验对278名幼儿及其父母进行调查。 结果：（1）SES、HLE各维度（除hle5）与词汇理解呈显著正相关;电子屏幕使用时间与SES、HLE各维度和词汇理解呈显著负相关;（2）HLE和电子屏幕使用时间分别在SES和母亲受教育水平与幼儿词汇理解间起链式中介作用。 结论：HLE和电子屏幕使用时间在SES和幼儿词汇理解间起中介作用。     

The influences of tropical climate on imagined walking time

This study investigated the effects of a Tropical Climate (TC) on actual and imagined walking times. Participants had to execute and imagine walking 3 distances with or without a 10-kg weight in either a TC or an Air Conditioning (AC) condition. The motor imagery quality was evaluated by computing the isochrony index. The results revealed that movement times were shorter for imagined walking than for actual walking and increased with the distance of the paths in both cases. By contrast, the effect of the load increased actual walking times for the 10- and 15-meter distances without affecting imagined walking times. Importantly, the isochrony index was negatively affected by the increase in load and distance and the effects of distance were amplified in a TC. These findings showed that the environmental climate in which motor imagery arises can modulate the subject’s ability to build up the temporal characteristics of simulated actions.     

Le rôle modérateur du harcèlement environnemental au travail dans la relation entre l’attachement au lieu de travail et le soutien organisationnel perçu. Étude auprès d’un échantillon féminin

This article examines the effect of environmental harassment at work in the relationship between attachment to the workplace and perceived organizational support. A survey was conducted via a questionnaire with 304 employees in different professional sectors (commerce, healthcare, teaching, administration) in the public or private sector. Analyses show that (a) attachment to the workplace and environmental harassment at work are strongly associated with perceived organizational support, the former positively and the latter negatively, and (b) two dimensions of environmental harassment at work, namely manipulation of the work environment and manipulation of the personal space, moderate the relationship between attachment to place and perceived organizational support, reducing the effect of this relationship. The practical implications of the research are discussed.