Roles of personal and environmental factors in the red light running propensity of pedestrian: Case study at the urban crosswalks

Pedestrian is vulnerable to mortality and severe injury in road crashes. Red light running violation of pedestrians is one of the leading causes to the crashes at signalized intersections, at which the crash involvement rates of pedestrians are high. Therefore, it is important to identify the factors that affect the propensity of red light running of pedestrian. In this study, effects of both personal factors (pedestrians’ demographics and behavior) and environmental factors (presence and behavior of other pedestrians, signal time, and traffic condition) on the individual decision of red light running violation are examined, using the video observation surveys at the signalized crossings that are prone to pedestrian-vehicle crashes and have moderate pedestrian and vehicular traffic volumes in the urban area. Crossing behaviors of 6320 pedestrians are captured. Results of a random parameter logit model indicate that pedestrian gender, age, number of lanes, presence of a companion, number of pedestrians around, presence of other violators in the same cycle, time to green, red time, traffic volume, and percentage of heavy vehicles all affect the propensity of red light running violation of pedestrians. Also, there are significant interaction effects by pedestrian’s gender and age, presence of other violators, with a companion, and traffic volume on the propensity. Findings are indicative to the development of effective engineering, enforcement and educational initiatives combating the red light running violation behavior of pedestrians. Therefore, pedestrian safety level at the signalized intersections can be enhanced.     

Investigating the effects of Rectangular Rapid Flash Beacons on pedestrian behavior and driver yielding on 25 mph streets: A quasi-experimental field study on a university campus

Rectangular Rapid-Flash Beacons (RRFBs) are safety measures that have become popular in recent years in the USA. Such equipment has demonstrated effectiveness in reducing vehicle speed and conflicts among road users, and increasing drivers’ yielding to pedestrians. However, RRFB effects on pedestrian behaviors are less well documented, and perhaps could produce contraindicated effects in crossing behavior. Specifically, RRFBs may give pedestrians a feeling of protection and induce them to more risk-taking when crossing the road. The current study was designed to investigate drivers and pedestrians’ reactions to a RRFB system installed at a university campus located in Virginia, USA. We deployed (a) field observation, using a multiple pretest/posttest non-equivalent control group quasi-experiment design and (b) interviews of students throughout the project’s multiple time periods. In total, 2454 pedestrians and 1312 drivers were observed and 265 students were interviewed. RRFB installations did not distinguish driver yielding likelihood between sites with or without RRFBs. However, driver yielding overall increased linearly over the five rounds of the study. Whether this was the result of the general presence of RRFBs on campus from the third round to the end of the fifth round is unknown. There is evidence from person interviews that students perceived increased safety for pedestrians over time. Being a RRFB chosen site or actual activation of the RRFBs did not have a significant relationship with pedestrian looking behavior either. The potential consequences of these results as well as the context of RRFB use on a university campus and generally low-speed roads are discussed.     

Reliability of variable message signs information: A field experiment study in Chongqing

A variable message sign (VMS), which is a key component of intelligent transportation systems, has been frequently used in the management of urban roads and motorways to provide drivers with real-time traffic condition information about a road section or area. Nevertheless, there is a lack of unified regulations for VMS design, which makes it difficult to accurately determine the understandability and legibility of VMS information. In practice, inappropriate designs of VMSs are common, such as overload of VMS information and excessive number of phases, particularly on the urban roads of China. Building on our earlier findings obtained by surveys, in this study, field tests were conducted to assess the reliability of VMS information in terms of the visual perception characteristics of drivers. For a full visual perception, the information displayed on a VMS must be reliable, i.e., it should be easy for drivers to detect, obtain, and understand the messages they require. Two basic theories—information theory and visual perception theory—were introduced to build a quantification model of VMS information, select evaluation indices, and design the experimental process. A total of 24 drivers participated in the field experiments and questionnaires. Five indices—information obtainment rate, periodic validity, driver subjective scoring and the corresponding UI (represents information intelligibility), and CE (represents information legibility)—were analyzed to evaluate their relationships to VMS information reliability. The results confirmed that the amount of information, and the scrolling period considering redundant distance, significantly affect the reliability of VMSs information. For static VMSs, the information obtainment rate and the subjective scoring decrease with increasing amount of information. The recollection accuracy of the drivers significantly declines when the amount of information shown increases to 90 bits, corresponding to an information obtainment rate of less than 0.8 and UI equal to 0. For dynamic VMSs, the information reliability deteriorates as the scrolling period shortens and the number of phases increases. Unreasonable reliability is found when the periodic validity is less than 0.9, i.e., the actual scrolling period is more than 10% less than the calculated one, corresponding to CE equal to 0. The reliability of information was evaluated by combining the subjective scoring of the drivers and a data-based statistical analysis and considering driving safety. Accordingly, it was recommended that 90 bit is the maximum amount of information to be shown on a VMS and that the preferred scrolling period of each phase of a dynamic VMS is 5 s. The results of this study support the objective of providing reliable information to drivers by addressing the problems related to the amount of information and presentation time for VMSs. These findings provide a basis for determining the thresholds for VMS information to promote practical and user-friendly designs of VMSs on urban roads.     

Cultural foundations of safety culture: A comparison of traffic safety culture in China,Japan and the United States

Understanding how to assess the influence of culture on traffic safety is important for improving traffic safety globally. Traffic safety culture is embedded in the larger context of country’s cultural norms and values, producing different safety outcomes even when other factors are similar. The current work examines how culture influences traffic safety outcomes in three of the largest automobile countries in the world, but which have very different cultural values and which also have very different traffic safety outcomes: China, Japan and the United States. China has an emerging driver population and cultural values that result in aberrant driving behaviors and “scrambling” to gain the right of way, producing a high number of crashes. Japan has an established driver culture, but an emphasis on reducing risk, which results in a lower rate of crashes. The United States, with the most established “car culture”, has an historical and cultural view of the car as a representation of freedom, leading to choices that result in higher crash rates than many countries around the world. The current work explores these cultural underpinnings for traffic safety culture in each country by establishing the historical basis for a traffic culture, examining road, vehicle engineering and legal standards, and reviewing available crash data and data on safety attitudes. These countries are compared across the different dimensions to establish unique cultural influences on traffic safety.     

Modelling determinants of walking and cycling adoption: A stage-of-change perspective

Shifting travel away from cars and towards more active modes has proven a formidable policy challenge. This study aims to uncover the determinants of walking and cycling adoption by applying a stage-of-change framework. Drawing on the Transtheoretical Model, this framework models the adoption of active modes as a series of stages from pre-contemplation to maintenance. Ordinal logit models applied to US data (n = 914) illustrate the importance of both observable demographic-personal and perceptual-attitudinal variables for determining stage-of-change membership. Comparing walking and cycling, the model reveals both shared variables (vehicle ownership, self-identity) and differing factors (gender, environmental spatial ability) distinguishing among adoption stages, which has significant implications for transport policy. Results indicate that a model combining both demographic-personal and perceptual-attitudinal factors has the best fit and validity, suggesting that travel behavior interventions would benefit from multivariate segmentation methods that consider an array of individual and group characteristics. This research also gives evidence of different determinants motivating change processes for cycling versus walking. Taken together, results suggest a need for tailored policy interventions to promote behavioural adoption based not merely on the specific mode selection, but also on the usage stage under consideration.     

Placebo in the investigation of psychotropic drugs,especially antidepressants

The paper presents major ethical, legal and methodological problems related to the use of placebo in mental disorders, especially in depression. It is pointed out that although authoritative groups of experts and numerous publications in the field of psychopharmacology indicate advisability of the double blind design with placebo in clinical trials of antidepressants, in recent years there have been more and more voices questioning legitimacy of this method. Objections of an ethical nature are raised, and reliability of this approach is put into doubt from the methodological viewpoint. These issues are discussed in more detail in the paper. Available alternative solutions should be implemented in psychotropic drug studies. The author shares these objections and doubts of an ethical nature, and believes that the placebo procedure is not a necessity in clinical trials of antidepressants. An earlier version of this paper was presented at an international conference, “Placebo: Its Action and Place in Health Research Today,” held in Warsaw, Poland on 12–13 April, 2003.     

Effect of MAO A deficiency on different kinds of aggression and social investigation in mice

Monoamine oxidase A (MAO A) degrades serotonin, dopamine and noradrenaline, factors critically involved in the regulation of aggression. Different kinds of aggression were investigated in Tg8, a transgenic mouse strain lacking a functional MAO A gene. MAO A-deficient mice differ from wild-type C3H/HeJ (C3H) in terms of showing higher territorial, predatory and isolation-induced aggression. Tg8 demonstrated shorter latencies to cricket killing and to the first attack after 6 weeks isolation than C3H mice. In the resident-intruder paradigm, MAO A-lacking mice were more aggressive than C3H when tested as intruders. In contrast to C3H, attack in Tg8 mice did not depend on different aggressiveness of intruders of BALB/c, A/Sn and C3H strains. Tg8 mice displayed no increase in aggression but demonstrated reduced social investigation towards anesthetized, as well as towards juvenile BALB/c males. Thus, MAO A deficiency in Tg8 mice is accompanied by increased expression of different kinds of aggression, as well as by disruption of normal pattern of social interaction.     

A Monte Carlo investigation of conjoint analysis index-of-fit: Goodness of fit,significance and power

Researchers in the field of conjoint analysis know the index-of-fit values worsen as the judgmental error of evaluation increases. This simulation study provides guidelines on the goodness of fit based on distribution of index-of-fit for different conjoint analysis designs. The study design included the following factors: number of profiles, number of attributes, algorithm used and judgmental model used. Critical values are provided for deciding the statistical significance of conjoint analysis results. Using these cumulative distributions, the power of the test used to reject the null hypothesis of random ranking is calculated. The test is found to be quite powerful except for the case of very small residual degrees of freedom.The authors thank the editor, the three reviewers and Ellen Foxman for helpful comments on the paper. Sanjay Mishra was a doctoral student at Washington State University at the time this research was completed. He is currently in the Department of Marketing at the University of Kansas.     

行动控制在农村教师工作压力与工作倦怠中的作用:PSI理论的分析视角

采用logistic回归分析,考察了322名农村中小学教师的人口学变量和工作压力、行动控制风格、行动控制策略对其工作倦怠的风险预测能力,并借助结构方程模型进一步分析了各心理变量间的关系,从PSI理论角度诠释了倦怠形成的机制。结果发现:中专、高级职称、中高压力水平、低行动控制策略和状态导向是导致中小学教师工作倦怠的危险性因素;行动导向者的工作压力、工作倦怠及行动控制策略运用水平显著好于状态导向者;工作压力、行动控制风格对工作倦怠的直接效应显著;行动控制风格和行动控制策略在工作压力和工作倦怠间起中介作用。因此,PSI视角下的工作压力-工作倦怠模型能够更有效地解释工作倦怠的形成机制;借助PSI理论构建的干预训练,有助于预防和缓解工作倦怠。     

Perceived coach-autonomy support, basic need satisfaction and the well- and ill-being of elite youth soccer players: A longitudinal investigation

Objectives

Drawing from the basic needs theory [BNT; Ryan, R. M., & Deci, E. L. (2002). An overview of self-determination theory. In E. L. Deci, & R. M. Ryan (Eds.), Handbook of self-determination research (pp. 3-33). Rochester, NY: University of Rochester Press], the major purpose of the present study was to test a hypothesized sequence of temporal relationships between perceptions of coach-autonomy support, basic need satisfaction and indices of well- and ill-being. A subsidiary aim was to ascertain the assumed mediational role of basic need satisfaction in explicating the perceived autonomy support and well-/ill-being relationships over time.

Design

A field-based longitudinal design was employed.

Methods

Participants (N = 54 males) from an elite youth soccer academy in the UK completed a multi-section questionnaire tapping the targeted variables on six occasions across two competitive seasons.

Results

Multi-level regression analyses revealed that perceptions of coach-autonomy support positively predicted within-person changes and between-person mean differences in basic need satisfaction and well-being over time. Satisfaction scores for the needs for competence and relatedness were found to predict within-person changes in subjective vitality. These same needs partially mediated the coach-autonomy support-subjective vitality link over the two seasons.

Conclusions

The findings partially support the tenets of BNT, and are discussed in terms of their practical application to participants involved in an elite youth sport setting.     

Police intervention in riots: The role of accountability and group norms. A field experiment

This study explores the role of perceived accountability in riot police action. The basic hypothesis is that accountability, provided that non-violent norms are made salient, will lessen the chances of escalation of a conflict between police and demonstrators. Four platoons participated in a field experiment conducted at the Dutch Riot Police Academy, in which they played a riot simulation. In a 2 × 2 design, the effects of accountability and Department on attitudes and norms concerning the action of ‘police’ and ‘demonstrators’ were tested. Measurements were made before and after the simulation. Internal analysis, involving redefined accountability categories, provided support for our hypothesis. That is, perceived accountability proved to be related to a heightened public self-awareness, a less extremely positive evaluation of fellow group members, and less intergroup differentiation. The limitations of an internal analysis are discussed, as well as the importance of the nature of organizational norms and of the accountability forum in predicting the effect of accountability.     

Attitudes,norms and driving behaviour: A comparison of young drivers in South Africa and Sweden

Culture is increasingly recognised among traffic psychologists to be a factor influencing driving behaviour. This study examines whether a cultural background characterised by rapid social change and high levels of violence and aggression, as in the South African context, has any discernible influences on driving standards or the behaviour of individual drivers. The experiences and attitudes of young drivers in South Africa are compared with a group of young drivers from Sweden, a country whose society has exhibited high levels of stability and where road user behaviour is renowned for its restraint and compliance with regulations.The two cohorts provide information about their exposure to traffic injuries, their attitudes to other drivers and to a range of traffic offences, and to the types of behaviour they personally engage in. Among the South African respondents the notion of a declining standard of driving emerges very clearly, and specific new norms of driving are identified. Such norms are explained to be a consequence of new social values or challenges inherent within contemporary South African society.     

A mixed effects negative binomial analysis of road mortality determinants in Sub-Saharan African countries

This paper uses aggregate data for a panel of 23 Sub-Saharan African countries to explore the potential predictors of road traffic fatalities between 2001 and 2010. In addition to the Gross Domestic Product per capita, the set of covariates includes some demographic, safe driving behavior, health and infrastructure-related variables. Estimations from a mixed effects negative binomial regression suggest that the fraction of populations aged between 15 and 64 years, the size of the road network and seat belt laws significantly increase fatalities. However, populations of age 65 and above, hospital beds and physicians’ densities, and road audits significantly decrease these fatalities. Moreover, traffic fatalities are found to increase with the Gross Domestic Product per capita. The economic implications of this finding is not to lower the economic growth but to design policies and technologies that could prevent African countries from experiencing the same road tragedy observed in industrialized countries during their development process.     

A 'quantum' of truth in a field of lies: the investigation of emotional truth in a child analysis

Following Bion’s ideas of analytical research the author intends to consider the need to pursue emotional truth between patient and psychotherapist in order to produce a psychological development. It is shown through the analysis of a child how emotional falsification can distort first of all the definition of the child identity. Successively the attention is focused on how lies, as an unconscious element that twist the research of the truth, obstruct the development of thoughts able to transform emotions.Using a quantisation physical model of space, the author hypothesises that the transformation of β elements in α elements is always in an unstable equilibrium. The distortion of emotional truth co‐produced by lies affects the oscillation β?α at a primitive level of transformation, changing the “physical” state of the analytical field from conductor to insulator. The most important consequence of the particular point of view suggested by the quantistic model is that in the third analytical space the same definition of α elements or β elements depends on the analyst’s point of view. This change of perspective can vitalise the analytical thinking of patient and analyst during an impasse.     

The variability of client,therapist and clinic in psychotherapy outcomes: A three-level hierarchical model

This article investigates the percentage of variance in psychotherapy outcomes explained by the case-mix variables for individual cases, by the therapist (therapist effects), and what additional variance is explained by the clinic with which the therapist is affiliated. While there has been substantial recent research regarding therapist effects, very little has been published regarding clinic-level effects after controlling for therapist effects. The study utilised the largest sample reported to date, using data from 28 clinics with a minimum of 2,000 cases in a clinical range of severity of symptoms with pre-post change scores on an outcome questionnaire. Only cases treated by a therapist with at least 30 cases were included. These selection criteria resulted in a case count of 156,258 clients treated by 874 therapists located at 28 clinics. After controlling for differences in case mix using diagnosis and intake score (severity of symptoms), the resulting analyses indicated that 5.21% of the variance in treatment outcome was explained by the therapist, while another 1.13% of the variance was associated with the clinic. Findings are discussed with implications for practice and policy.