The Virtual Kitchen Challenge: preliminary data from a novel virtual reality test of mild difficulties in everyday functioning

ABSTRACT

Background: Efficient, objective measures of mild functional difficulties are lacking. Preliminary data from a novel, non-immersive virtual reality, performance-based task (Virtual Kitchen Challenge; VKC) were obtained to address this gap.

Methods: 14 older and 21 younger adults completed cognitive tests and two everyday tasks (breakfast, lunch) in the VKC with virtual objects and a touch-screen and in the Real Kitchen with real objects (order counterbalanced). Automated performance measures were obtained from the VKC program and human coders scored VKC and Real Kitchen videos for errors.

Results: Older adults made more errors than younger adults on the VKC and Real Kitchen, with similar error patterns across measures. VKC automated measures were significantly related to measures from human coders, performance on the Real Kitchen, and cognitive test scores.

Conclusion: The VKC is a valid and highly efficient performance-based measure of subtle functional difficulties with great potential for future clinical and research applications.     

Deriving Training Strategies for Spatial Knowledge Acquisition From Behavioral,Cognitive, and Neural Foundations

While much has been made of the potential uses for virtual environment (VE) technologies as training aids, there are few guidelines and strategies to inform system development from the user’s perspective. Assumptions are that a human factors-based evaluation will ensure optimal performance, transferring training from virtual to real worlds; however, there are complex, yet unexplored, issues surrounding system optimization and employment. A comprehensive investigation into the foundations of training, traversing levels of performance analysis, from overt behavioral responses to the less explicit neuronal patterns, is proposed from which optimal training strategies can be inferred and system development guidelines deduced.     

Demons,voices and virtual realities in adolescence–an exploration of zeitgeist,culture and cultural complexes

This paper contrasts two aspects of the adolescent's sojourn in the metaphorical landscape of the borderland. Either this ‘dance with death’ can prove life‐affirming and serve individuation as the intensity of being poised on the cusp between life and death negates numbing dissociation, or it can spiral into madness and suicide when the adolescent gets trapped in a mimetic hall of mirrors. This paper considers both the oscillations between mimesis and alterity, and how culture and cultural complexes may define expressions of distress. It concludes with the question of whether one can–and whether one should–make sense of the demons from the other side; and whether they are psychotic, pseudo‐psychotic or dissociative manifestations as they emerge during the course of therapy.     

虚拟社区公民行为在虚拟社区感与知识共享意图间的中介作用:自我效能感的调节机制

采用问卷法对445名虚拟社区成员及与其比较亲密的其他社区成员进行调查,探讨了虚拟社区感的三个维度(成员感、影响力、沉浸感)对成员知识共享意图的影响及其内在作用机制。结果表明:(1)成员感对成员知识共享意图具有显著的正向预测作用,而影响力和沉浸感的预测作用不显著;(2)虚拟社区公民行为是成员感对成员知识共享意图作用的中介变量;(3)自我效能感在成员感—虚拟社区公民行为—知识共享意图关系中不具有显著的调节效应。     

我与另一个我:网络自我与现实自我的关系辨析

与现实自我相对,网络自我是个体在网络世界中的自我。在网络生活日益普及的今天,探讨网络自我与现实自我之间的关系具有重要意义。综合自我身份、外形及人格等方面的研究,可以得知网络自我在一定程度上是现实自我的虚拟投射,但对于一些容易受到社会评价的特征,个体会对网络自我进行适度的理想化。同时,网络平台属性以及用户个人特征都会影响网络自我与现实自我之间的关系。未来研究可以结合不同平台与场景、多种研究方法、在不同文化背景下对网络自我与现实自我之间的关系进行进一步探索。     

虚拟团队共享式领导的双刃剑效应研究：基于调适性结构理论的视角

虚拟团队因新兴技术驱动而成为组织管理的潮流, 尤其全球疫情的爆发使得远程办公备受关注。共享式领导是与虚拟团队高度匹配的领导模式, 但现今学界对虚拟团队共享式领导作用机制的研究比较匮乏, 且集中在正面效应和团队层次, 忽略了共享式领导可能存在的负面效应及对个体层次的影响。研究基于调适性结构理论, 提出虚拟团队共享式领导有助于团队及个体内部动机和效能感的提升, 同时也会加剧团队内社会惰化现象和关系冲突水平, 引发员工的工作负荷和工作焦虑感, 进而对团队绩效和个体绩效产生双刃剑效应, 同时, 团队虚拟性、任务复杂性和任务重要性在其中起到调节作用。研究模型系统打开了虚拟团队共享式领导的影响机制黑箱, 为组织如何在虚拟情境下领导团队、提升绩效提供借鉴。     

三维动静态场景下返回抑制的扩散

使用虚拟现实技术探讨三维动静态空间下返回抑制是否敏感于深度线索及返回抑制效应是否存在空间扩散。采用线索−靶子范式,分别设置三维静态和动态场景。结果发现：三维静态场景,不同深度及不同侧位置均发生返回抑制且产生效应大小有差异;三维动态场景,不同线索条件反应时无显著差异。结果表明,三维静态场景下,返回抑制敏感于深度线索,其效应在空间中存在扩散;客体运动破坏了返回抑制的产生及其效应的空间扩散。     

虚拟环境中临境感及其测量方法

虚拟环境（VE）中的临境感是用户感知身处VE而产生的一种主观体验,是评价VE的重要指标。VE临境感产生的基础在于个体VE某一特征的集中注意,其程度强弱在一定范围内取决于个体分配于VE的注意资源量,受诸如计算机技术设备等系统因素、表现为个体差异的用户因素以及人机对话过程中交互因素的影响。在此基础上本文从生理指标（生理测量法、心率变化和皮肤电阻变化）、行为指标（姿势变化和冲突条件下的刺激定位）、心理物理学（对比法和跨通道匹配法）、主观评价（WS-PQ、SUS-PQ、ITC-SOPI和直接主观评价法）和绩效衡量对VE临境感的测量方法进行总结和简单评价。