Level of service delivery of public transport and mode choice in Accra,Ghana

Worsening traffic congestion and air quality has been associated with the proliferation of informal operation of private microbus and minibus in African cities. It is recognised that large buses hold the promise of relieving the growing congestion of African cities if they are managed efficiently and sustainably.It is in line with this that this study seeks to explore the reasons behind commuters’ non-preference of Metro Mass Transit (MMT) for intra-city commuting in Accra, Ghana. A revealed preference survey was administered to 134 commuters to find out the reasons behind their non-preference and their perception of the level of service (LOS) delivery of the Metro Mass Transit.The Study revealed that though Metro Mass Transit was 20% cheaper in terms of price, commuters perceived its service delivery as poor. Over-crowding of buses, non-adherence to time schedule, long in-vehicle time, perception of not getting access to seats, non-availability of bus at respondents’ origins and destinations, accessibility of alternative modes and long waiting times for buses accounted for the major reasons for non-preference.Metro Mass Transit Limited’s improvement in its service attributes especially in-vehicle time, waiting time, comfort, reliability and accessibility is a means of increasing its modal share. Adherence to these is the surest way to achieving the objective of promoting mass transit in Accra by shifting people from the use of unsustainable modes such as mini-buses and taxis to the use of efficient high capacity systems as Metro Mass Transit.     

Ethical Guidelines for Mass Trauma and Complex Humanitarian Emergencies

Issues pertaining to trauma, especially mass trauma and complex humanitarian emergencies, are explored through the lens of ethical counseling guidelines. In mass trauma, particular attention must be paid to the experiences of both survivors and counselors to enhance understanding of ethical best practices and to emphasize the importance of contextual factors in framing effective responses to trauma and humanitarian crises. Recommendations regarding ethical guidelines for counseling practice, clinical involvement, and training are offered.     

女大学生体重知觉偏差及探因

以女性身体图形评定量表PFRS (the female Photographic Figure Rating Scale)作为刺激材料, 研究女大学生体重自我知觉与偏差, 以及女大学生对他人的体重知觉与偏差, 引入男性视角作为体重社会标准, 研究女大学生体重社会知觉与偏差。研究中要求女大学生选择准确代表自己胖瘦的图像, 选择自己理想胖瘦的图像, 选择他人眼里最有吸引力的图像, 估计PFRS真人照片图像体重值(假定图像中人物和自己身高相同), 并报告自己的实际体重和理想体重。研究要求男大学生选择最有吸引力的图像。在此基础上提出3种模型假设：镜像模型、泛化模型和相关模型, 进一步探索女大学生体重知觉偏差的原因。研究表明：女大学生体重自我知觉高估了对应真人图像的BMI; 女大学生对其他女性BMI知觉, 倾向于高估体重正常和偏瘦女性的BMI, 低估偏胖和肥胖女性的BMI; 女大学生体重的主观社会压力高于体重的实际社会压力, 对体重社会压力存在过度解读的倾向。女大学生对他人体重知觉偏差更有可能影响其体重自我知觉偏差; 认知评价不是造成女大学生知觉偏差的重要因素, 但两者关系需要进一步实证。     

The Diversity–Segregation Conundrum

There is a long literature extolling the virtues of diversity for both the civility and economic performance of nations and cities. On the most basic level, diversity helps nations and cities attract the wide range of creative talent that drives innovation and economic growth. Yet similarly, there is a large amount of literature on the sorting and segregation of different types of people into distinct communities. This in turn undermines the very mixing of people and groups required for economic prosperity to flourish. This essay looks at the conundrum between diversity and segregation. It argues that both are increasingly salient, interdependent, and interconnected features of large, advanced cities or metropolitan areas. This diversity–segregation conundrum is increasingly a core feature of our social and economic landscape. It reviews several recent studies that highlight this problem, as well as some of my own very recent empirical findings on the issue.     

A wearable vibrotactile biofeedback system improves balance control of healthy young adults following perturbations from quiet stance

Maintaining postural equilibrium requires fast reactions and constant adjustments of the center of mass (CoM) position to prevent falls, especially when there is a sudden perturbation of the support surface. During this study, a newly developed wearable feedback system provided immediate vibrotactile clues to users based on plantar force measurement, in an attempt to reduce reaction time and CoM displacement in response to a perturbation of the floor. Ten healthy young adults participated in this study. They stood on a support surface, which suddenly moved in one of four horizontal directions (forward, backward, left and right), with the biofeedback system turned on or off. The testing sequence of the four perturbation directions and the two system conditions (turned on or off) was randomized. The resulting reaction time and CoM displacement were analysed. Results showed that the vibrotactile feedback system significantly improved balance control during translational perturbations. The positive results of this preliminary study highlight the potential of a plantar force measurement based biofeedback system in improving balance under perturbations of the support surface. Future system optimizations could facilitate its application in fall prevention in real life conditions, such as standing in buses or trains that suddenly decelerate or accelerate.     

“超级女生”的公众心理效应分析

本文试图从公众心理效应的角度分析“超级女生”受如此多海内外中国观众钟爱的原因,以及“超级女生”带给个人和组织在如何利用公众心理效应上的启示。     

A Critical Test of the Waist-to-Hip Ratio Hypothesis of Women's Physical Attractiveness in Britain and Greece

Body mass index (BMI) and body shape as measured by the waist-to-hip ratio (WHR) have been reported to be the major cues to women's bodily attractiveness. The relative importance of each of these cues was examined cross-culturally in two distinct countries, Greece and Britain. Fifty Britons, 25 British-Greeks, and 25 participants in Greece were asked to rate a set of images of real women with known BMI and WHR. The results showed that, regardless of the cultural setting, BMI is the primary determinant of women's physical attractiveness, whereas WHR emerged as a significant predictor for the Greek groups but not the British group. This finding is discussed in terms of the different gender roles occupied by Britons and Greeks. The discussion critically evaluates evolutionary psychological and sociocultural explanations of preferences for body weight.     

大众媒体对女性身体意象的影响

大量研究证明,大众媒体会对女性的身体意象产生负面影响,造成女性身体不满意、饮食失调等。这篇文章回顾了已有研究,综述了媒体和女性身体意象的关系,以及媒体影响女性身体意象的四种相关理论及内在机制。最后,展望了未来的研究方向。     

Body mass index,peer victimization,and body dissatisfaction across 7 years of childhood and adolescence: Evidence of moderated and mediated pathways

Numerous studies have reported that children and adolescents who are overweight are more likely to get bullied, yet the literature is replete with methodological limitations. We examined the transactional associations between peer victimization and body mass index (BMI), considering potential mediating (body dissatisfaction) and moderating (biological sex) factors. Participants (n = 631) came from the McMaster Teen Study, where students were assessed annually between Grades 5–11, approximately half were girls (53.9%), and the majority were white (76.4%). Peer victimization (from Grade 5) and body dissatisfaction (from Grade 6) were self‐reported by students, while parents reported their child's height and weight (from Grade 5). Cascade models were built up sequentially using path analysis across 2‐year increments (Grades 5, 7, 9, and 11). The final model had excellent fit to the data (χ² = 73.961, df = 66, p = 0.234). Grade 5 peer victimization had a direct effect on BMI across a 2‐year period in girls (b = 0.59, SE = 0.21, p = 0.005) and boys (b = 0.82, SE = 0.30, p = 0.006), and an indirect effect on BMI via body dissatisfaction across a 4‐year period (b = 0.074, 95% CI = 0.012–0.152, p = 0.036). At no point did BMI directly increase risk for peer victimization, yet there were indirect effects via body dissatisfaction among girls but not boys. Peer victimization and body dissatisfaction were proximally and longitudinally related at every time point and there was a transactional association in late‐adolescence among girls but not boys. Targeting modifiable factors in the social (peer victimization) and psychological (body dissatisfaction) domains may limit accelerated weight gain and the health risks associated with excess adiposity.     

Job apathy and work engagement: Moderating influence of perceived leader integrity and spiritual intelligence in a Nigerian mass transit company

This study explored the direct and interactive roles of job apathy, perceived leader integrity, and spiritual intelligence on work engagement among 206 Nigerian employees of a leading mass transit company (females = 33%; mean age = 35.81years, SD = 5.04; mean organisational tenure = 6.27 years, SD = 2.26). Results following moderated hierarchical multiple regression showed that work engagement was lower with job apathy and higher with perceived leader integrity and employee spiritual intelligence. Moreover, employees with a high perception of leader integrity reported being more work engaged, regardless of feeling apathetic about their job, compared to those with a low perception of leader integrity. Perceived leader integrity and spiritual intelligence are important for work engagement in Nigeria’s transportation sector setting.