Laterality of Champion Athletes

Certain experimental designs are based upon the assumption that performance level becomes stabilized after a prolonged period of practice. This assumption was tested by taking a long series of repeated measurements upon a single S for the performance of each of several constant tasks, each task being tested singly in a separate series of measurements. Results showed that after thousands of practice trials on a simple task S may still be learning or showing other sequential effects in performance. These effects may disappear on one day only to reappear on the next. Therefore it is extremely doubtful that “practice to an asymptote” should be regarded as either an efficient or an effective method of eliminating sequential effects from an experiment proper.     

Organization of Compensatory Postural Coordination Patterns

The authors investigated whether compensatory postural coordination patterns are organized according to the same dynamical principles as are nonequilibrium phase transitions. Eight participants were asked to maintain upright balance on a moving platform that was sinusoidally translated in the anterior-posterior direction and was systematically increased and decreased 0.19 Hz as a step function every 10 platform cycles through the frequency range 0.19–1.46 Hz. At low platform frequencies, all participants exhibited small joint angular motions with high variability, and the relative phase between the joint motions exhibited drifting patterns and large fluctuations. As platform frequency increased, the amplitude of joint motion increased systematically and joint-specific oscillatory patterns emerged. The findings provided no evidence for a Hopf bifurcation or hysteresis in the transitions of postural coordination modes, however, or, mote generally, a basis for distinguishing the relevance of linear versus nonlinear models of postural control.     

Horizontal Plane Head Stabilization During Locomotor Tasks

Frequency characteristics of head stabilization were examined during locomotor tasks in healthy young adults (N = 8) who performed normal walking and 3 walking tasks designed to produce perturbations primarily in the horizontal plane. In the 3 walking tasks, the arms moved in phase with leg movement, with abnormally large amplitude, and at twice the frequency of leg movement. Head-in-space angular velocity was examined at the predominant frequencies of trunk motion. Head movements in space occurred at low frequencies (< 4.0 Hz) in all conditions and at higher frequencies (> 4.0 Hz) when the arms moved at twice the frequency of the legs. Head stabilization strategies were determined from head-on-trunk with respect to trunk frequency profiles derived from angular velocity data. During natural walking at low frequencies (< 3.0 Hz), head-on-trunk movement was less than trunk movement. At frequencies 3.0 Hz or greater, equal and opposite compensatory movement ensured head stability. When arm swing was altered, compensatory movement guaranteed head stability at all frequencies. Head stabilization was successful for frequencies up to 10.0 Hz during locomotor tasks Maintaining head stability at high frequencies during voluntary tasks suggests that participants used feedforward mechanisms to coordinate head and trunk movements. Maintenance of head stability during dynamic tasks allows optimal conditions for vestibulo-ocular reflex function.     

The Need for a Continuum of Trauma Services

Summary

Since September 2000, residents of Israel have experienced a prolonged period of terrorist attacks that shows no sign of abating. The ramifications of the ongoing trauma permeate every facet of life. Since existing services provided by government and Non-Governmental Organizations (NGOs) are unable to meet the needs that have emerged, the Continuum of Trauma Services (CTS) was developed for victims of terrorist attacks, their families, friends, emergency and mental health professionals and the community at large. This article also describes the Israel Trauma Coalition and its interest groups, which may be seen as the embodiment of an evolving CTS.     

Transformational leadership and customer service: A moderated mediation model of negative affectivity and emotion regulation

Integrating theories from leadership, emotion management, affectivity, and customer service, this study examines how transformational leadership leads to favourable customer intentions via the mediation of service employees' emotion regulation, job satisfaction, and their service performance and via the moderation of employee negative affectivity. Results obtained from data of 204 matched sets of managers, service employees, and customers show that the effect of transformational leadership on amplification of pleasant emotions was conditioned on service employees' negative affectivity. Employee service performance partially mediated the effect of job satisfaction on customer outcomes. Finally, overall results reveal that transformational leadership and amplification of pleasant emotions were more strongly related to the customer outcomes, as mediated through the intervening variables in the model, when negative affectivity was high than when negative affectivity was low. Results have implications for how service workers with negative affectivity can manage their emotions to achieve effective service outcomes through interactions with a leader, how the effect of transformational leadership can be bounded, and how transformational leadership and emotion regulation are relevant to customer service.     

Service learning in custodial settings in South Africa

This study describes the findings of a community engaged service learning program in which nine female and three male students ranging between 22 and 31 years of age from a large South African university participated in a study conducted in two metropolitan areas of South Africa. They were all senior level students registered for Criminological Evaluation and Assessment, a practically-oriented module aimed at equipping students with the required knowledge and skills to conduct criminological assessments. The students voluntarily assisted correctional centres with the assessment of sentenced offenders and in the compilation of individualized Correctional Sentence Plans (CSP) to inform the rehabilitation process of offenders. Students reported their reflections on their service learning experiences using on-line interviews and with question prompts. Extracts from the thematic data analysis suggest students perceived themselves to be instrumental to the Department of Correctional Services in the fulfilment of its goals, while they benefitted from enhanced learning and social responsibility.     

社会服务实践对中学生公民行动意向的影响——社会服务观念的中介作用

本研究对6203名参与过不同形式的社会服务实践的中学生进行调查,考察了中学生参与社会服务实践的现状及其对公民行动意向的影响机制。结果发现:(1)我国中学社会服务实践的质量各维度差异较大,内外调控、深化与拓展、课程关联和自主性得分依次显著降低。(2)中学生参与的社会服务实践在城乡、学校类型、年级上存在显著差异,学校类型和年级的交互作用显著。城市、示范学校、低年级的学生参与的社会服务实践的质量较好,示范学校的优势主要体现在低年级阶段。(3)中学生的社会服务实践经历影响其公民行动意向,而社会服务观念在其中起到部分中介作用。高质量的社会服务实践经历有助于改进中学生的社会服务观念,进而增强其公民行动意向。     

基于伦理学视域的失能老人照护服务体系研究

研究失能老人照护服务体系问题,对于保障失能老人的生命尊严与生存权利、促进社会和谐发展等具有重要意义.基于失能老人生存需要的服务供给、人才培养、制度安排、组织监管等问题,是照护服务体系构建的基本元素.坚持人本理念以及资源配置的公平、公正与效益目标,是照护服务体系构建的伦理原则.     

The Influence of Predeployment Training on Coordination in Multinational Headquarters: The Moderating Role of Organizational Obstacles to Information Sharing

Coordination is critical to the success of multinational military operations and may be fostered by predeployment training. We argue that whether such training is related to a high degree of perceived coordination at the individual level is likely to depend on whether individuals experience a low degree of organizational obstacles to information sharing. We examined this using data from the North Atlantic Treaty Organization (NATO) Kosovo Force headquarters (survey: n = 131). We controlled for whether it was the participants’ first deployment, the participants’ background (military or civilian), the amount of time spent in the headquarters by participants, whether differences pertaining to culture and opinions were valued by the organization, the quality of supervisor/subordinate relationships, and the degree of national cultural obstacles to information sharing. The results showed no significant direct effects on coordination from 3 different training configurations: national training, multinational training, and a combination of national and multinational training. However, we found a negative direct effect from organizational obstacles to information sharing on coordination, and support for organizational obstacles to information sharing as negatively moderating the multinational predeployment training and coordination relationship. Qualitative interviews (n = 14) indicated that informal information sharing, and the problems exchanging information from tactical to operational levels could hinder coordination. Interventions to foster coordination could benefit from a focus on multinational training and lowering organizational obstacles to information sharing. Our findings contribute to more precisely pinpointing the types of training that are useful in multinational operations, as well as the factors upon which training transfer is contingent.     

An empirical examination of stigma toward mental health problems and psychotherapy use in Veterans and active duty service members

Although many Veterans and active duty service members experience mental health problems, most do not seek out any sort of mental health help. Stigma (a significant predictor of treatment-seeking) has been documented among Veterans and active duty service members; however, previous research on stigma in these groups has primarily utilized correlational and qualitative designs. The purpose of this study was to gain a better understanding of stigma toward mental health problems in Veterans and active duty service members using an experimental design. One hundred sixty-five Veterans and active duty service members were randomized to read a vignette that described a Veteran who either did or did not experience a mental health problem and did or did not seek psychotherapy. Results indicated that the participants held more stigmatizing attitudes toward the Veteran who was described as having a mental health problem, but not toward the Veteran who was described as seeking psychotherapy. Additionally, participants held more positive attitudes toward the Veteran, compared to the attitudes that they believed other military members would hold. Last, with this sample of Veterans and active duty service members, self-stigma toward seeking psychotherapy was found to partially mediate the relationship between perceived public stigma and attitudes. Implications for addressing stigma in military service members and Veterans are discussed.