A virtual reality assessment and training system for unilateral neglect.

Patients with unilateral neglect have problems reporting, responding, or orienting to novel or meaningful stimuli that is presented to the side opposite to that of a brain lesion. This creates a serous problem in regards to daily living activities. However, the established methods for assessing and training of unilateral neglect patients have several deficits. Recently, virtual reality (VR) technologies have been used as an assessment and treatment tool for rehabilitation. Hence, this study designed a VR system to assess and train unilateral neglect patients. In addition, the suitability and feasibility of our VR system for unilateral neglect patients was verified.     

Neurofeedback training with virtual reality for inattention and impulsiveness.

In this research, the effectiveness of neurofeedback, along with virtual reality (VR), in reducing the level of inattention and impulsiveness was investigated. Twenty-eight male participants, aged 14-18, with social problems, took part in this study. They were separated into three groups: a control group, a VR group, and a non-VR group. The VR and non-VR groups underwent eight sessions of neurofeedback training over 2 weeks, while the control group just waited during the same period. The VR group used a head-mounted display (HMD) and a head tracker, which let them look around the virtual world. Conversely, the non-VR group used only a computer monitor with a fixed viewpoint. All participants performed a continuous performance task (CPT) before and after the complete training session. The results showed that both the VR and non-VR groups achieved better scores in the CPT after the training session, while the control group showed no significant difference. Compared with the other groups, the VR group presented a tendency to get better results, suggesting that immersive VR is applicable to neurofeedback for the rehabilitation of inattention and impulsiveness.     

Computer‐assisted learning for adults with profound multiple disabilities

Five adults with profound physical and intellectual disabilities were taught to respond to photographs of preferences embedded in Microsoft PowerPoint (Microsoft, 1997 ) presentations by operating microswitches that functioned as mouse clicks. Rate of responding was generally correlated with changes in types of presentation, although variability in rate was often high, and session durations were quite short. Two participants showed substantial increases in responding when fitted with switches that were easier to manipulate. This exploratory study demonstrates that people with extremely limited physical and cognitive abilities can be taught to operate switches that produce changes in visual arrays on a computer screen and sometimes differentially so. Implications for responding to photographic representations of preferences, rather than the tangible preferences themselves, are discussed. Copyright © 2004 John Wiley & Sons, Ltd.     

小学生应用题表征的类型和特点

以124名小学六年级学生为被试。采用应用题解决问卷考查了我国小学生应用题表征的类型和特点。结果表明小学生应用题的表征方式有复述内容、图式表征、图片表征、直译表征、语义结构分析等;成功解题者和不成功解题者对各种表征方式的使用次数上没有显着差异;成功解题者和不成功解题者在各种表征方式下的解题成绩有显着差异,成功解题者在图式表征、直译表征和语义结构分析表征下的成绩显着优于不成功解题者。     

Prosocial Attitudes toward Money from Terror Management Perspective: Death Transcendence through Spirituality

Based on Terror Management Theory (TMT), we suggest that spirituality and prosocial attitudes toward money have a similar defensive function in resisting existential anxiety. In mortality salient (MS) situations, both spirituality and prosocial money attitudes afford symbolic immortality by self-transcendent connections. In four studies, we found that activating death awareness weakened people’s subjective love of money (Study 1) and predicted increased spending willingness on prosocial rather than proself goals (Studies 2, 3, and 4). More importantly, MS effects on money attitudes were smaller when people’s trait spirituality was high (vs. low; Studies 1, 2, 3) and when people were primed to experience spirituality (vs. happiness control condition; Study 4). For low spirituality people, the association between MS and prosocial spending also depended on the capacity of money spending to contribute positively to one’s feelings of self-worth (Study 3). Theoretical implications and future directions are discussed.     

文化疏离感对汉区高校少数民族大学生幸福感的影响机制

为揭示文化疏离感与汉区高校少数民族大学生幸福感的关系,以及压力性生活事件的调节效应和基本心理需要的中介效应,采用文化疏离感量表、压力量表、基本心理需要量表和幸福感问卷对汉区高校少数民族大学生幸福感进行研究。结果显示:(1)文化疏离感会降低汉区高校少数民族大学生幸福感;(2)压力性生活事件对文化疏离感与汉区高校少数民族大学生幸福感的关系具有调节效应;(3)这一调节效应是以基本心理需要为中介变量。因此,文化疏离感对汉区高校少数民族大学生幸福感的影响是有中介的调节效应。     

组织行为学研究的现状：意义与建议

本文对2008~2011年这4个年度发表在英文和中文组织行为学方面重要学术期刊上的研究进行总结, 旨在让国内学者了解现今组织行为学的现状和发展。我们在分析研究内容、研究方法的基础上, 就当前中国组织行为学研究提出了一些总结性的看法, 包括：研究问题很大程度上追随国际潮流, 但缺乏对本土重要问题的关注; 研究方法过多地集中于定量的问卷调查法, 但缺乏对多种不同方法的应用; 研究的分析层次过多地集中在个体层次上, 而对多层次的组织和团队管理现象关注不足。为更好地促进组织行为学科的发展, 本文建议：应该注重立足中国的组织和管理现象来挖掘研究问题; 采用多种研究方法, 特别应鼓励开展定性研究; 注重跨层次研究和研究的情境化等。本文通过介绍近年来组织行为领域的全面情况并详细分析其中的若干个例, 为如何克服以上不足提供具体的范例和方法。     

Effect of Heel Heights on Female Postural Control During Standing on a Dynamic Support Surface With Sinusoidal Oscillations

The authors aimed to investigate female balance or stability control with comparative analysis of the center of pressure trajectory and plantar pressure distribution with different high-heeled shoes while standing on a dynamic surface with multidirectional perturbations. College females with at least 2 years' history of wearing high-heel shoes voluntarily participated in the test with a Novel Pedar insole (Novel, GmBH, Munich, Germany. With heels height increasing, the pressure time integral obviously transfer to the medial forefoot region, with center of pressure trajectory medially deviated significantly, either under anteroposterior or mediolateral perturbations. The passive plantarflexion position of ankle incurred by high heel increased the range of motion in the frontal plane but decreased ankle stability, thus increasing the challenge of body balance maintenance.     

The neural basis of insight problem solving: an event-related potential study

The electrophysiological correlates of successful insight problem solving (Chinese logogriphs) were studied in 18 healthy subjects using high-density event-related potentials (ERPs). A new experimental paradigm (learning-testing model) was adopted in order to make subjects find a solution on their own initiative rather than receive an answer passively. Results showed that Successful guessed logogriphs elicited a more positive ERP deflection (P200-600) than did Unsuccessful guessed logogriphs in the time window from 200 to 600 ms after onset of the stimuli. Subsequently Successful logogriphs elicited a more negative ERP deflection than did Unsuccessful logogriphs in the time windows of 1500-2000 ms (N1500-2000) and 2000-2500 ms (N2000-2500). Maps of the P200-600 showed strong activity in the midline parieto-occipital scalp regions. Dipole analysis localized the generator of P200-600 in the left superior temporal gyrus and parietotemporo-occipital cortex areas. The N1500-2000 and N2000-2500 had a distinct activation over left frontal scalp regions. Dipole analysis localized the generator of the N1500-2000 in the anterior cingulate cortex (ACC) and the N2000-2500 in the posterior cingulate cortex (PCC). This result indicates that the parietotemporo-occipital cortex areas might be involved in forming rich associations in the early stage of successful logogriph solving. Then, the ACC might play an important role in the breaking mental set and the forming of novel associations. At last, "Aha" feeling might activate the PCC.     

A Comparison of the Common‐Item and Random‐Groups Equating Designs Using Empirical Data

We designed this study to evaluate several data collection and equating designs in the context of item response theory (IRT) equating. The random‐groups design and the common‐item design have been widely used for collecting data for IRT equating. In this study, we investigated four equating methods based upon these two data collection designs, using empirical data from a number of different testing programs. When the randomly equivalent group assumption was reasonably met, the four equating methods tended to produce highly comparable results. On the other hand, equating methods based upon either of the equating designs produced dissimilar results. Sample size can have differential effects on the equating results produced by the different equating methods. In practice, a common‐item equivalent‐groups design often produces unacceptably large differences in the group mean due to various anomalies such as context effects, poor quality of common items, or a very small number of common items. In such cases, a random‐groups design would produce more stable equating results.