Whole-Body Movements in Long-Term Weightlessness: Hierarchies of the Controlled Variables Are Gravity-Dependent

Switching between contexts affects the mechanisms underlying motion planning, in particular it may entail reranking the variables to be controlled in defining the motor solutions. Three astronauts performed multiple sessions of whole-body pointing, in normogravity before launch, in prolonged weightlessness onboard the International Space Station, and after return. The effect of gravity context on kinematic and dynamic components was evaluated. Hand trajectory was gravity independent; center-of-mass excursion was highly variable within and between subjects. The body-environment effort exchange, expressed as inertial ankle momentum, was systematically lower in weightlessness than in normogravity. After return on Earth, the system underwent a rapid 1-week readaptation. The study indicates that minimizing the control effort is given greater weight when optimizing the motor plan in weightlessness compared to normogravity: the hierarchies of the controlled variables are gravity dependent.     

Theorizing Critical Placemaking as a Tool for Reclaiming Public Space

As economic inequality and segregation continue to grow in the U.S., psychology has an important role to play in exploring and promoting processes that can disrupt social injustice. This paper identifies the privatization of public space as a social problem that contributes to the entrenchment of social, economic, and racial inequality, and advances “critical placemaking” as a tool for reclaiming public space for public use. Drawing from key concepts in environmental psychology, narrative psychology, and community psychology, the proposed framework seeks to theorize the processes by which placemaking may contribute to transforming community narratives and building more inclusive, participatory, and democratic communities. Policy implications and future directions for empirical work are discussed.     

Isolating observer-based reference directions in human spatial memory: head, body, and the self-to-array axis

Several lines of research have suggested the importance of egocentric reference systems for determining how the spatial properties of one's environment are mentally organized. Yet relatively little is known about the bases for egocentric reference systems in human spatial memory. In three experiments, we examine the relative importance of observer-based reference directions in human memory by controlling the orientation of head and body during acquisition. Experiment 1 suggests that spatial memory is organized by a head-aligned reference direction; however, Experiment 2 shows that a body-aligned reference direction can be more influential than a head-aligned direction when the axis defined by the relative positions of the observer and the learned environment (the "self-to-array" axis) is properly controlled. A third experiment shows that the self-to-array axis is distinct from - and can dominate - retina, head, and body-based egocentric reference systems.     

Designs of Learning and the Formation and Transformation of Knowledge in an Era of Globalization

In this article, the formation and transformation of knowledge and the role of designs for learning will be elaborated and discussed in relation to the introduction of national curricula and school textbooks during the beginning of the industrialized era vs. the introduction of individual curricula and new digital learning resources in the post-industrialized era of globalization and multiculturalism. Quite different teaching and learning strategies have been emphasized, which I will call here “designed information and teaching” vs. “designs for learning”. It seems obvious that our current society is in a stage of change that requires a new understanding of knowledge, learning and identity formation. The new position and role of the learner underlines the productive and constructive aspect of learning. Pupils not only read texts, they also produce texts, pictures, film and music and they compile and edit virtual texts. Multimodal texts, as well as the information flow of the Internet, are the consequences of, and at the same time a vehicle for, new social patterns. “Learning Design Sequences” (LDS) is introduced as a theoretical map for the purpose of analyzing critical incidents in (a creative) learning process, using different genres, modes and media in a process of meaning-making.

The underlying structure of the Beck Depression Inventory II: A multidimensional scaling approach

The purpose of the present study was to confirm Beck’s six symptom categorization of depression through the most recent version of Beck Depression Inventory (BDI-II) by employing a confirmatory multidimensional scaling (MDS). This analysis indicates two independent dimensions in the BDI-II. The disturbance domain dimension relates to the domains wherein the disturbances occur, and validates Beck’s six symptom categorization dividing the items into disturbances in basic need-satisfaction, energy regulation, focused attention, regulation of emotion, motivation, and cognitive distortion in self-evaluation. The level of arousal dimension relates to how the disturbances are expressed, namely in an under-active, regular, or over-active manifestation. The MDS solution suggests 18 (6 × 3) symptom areas of depression, and may serve as a guide for constructing additional items.     

Spatial term apprehension with a reference object’s rotation in three-dimensional space

It has been reported that the overall shapes of spatial categorical patterns of projective spatial terms such as above and below are not influenced by the rotation of a reference object on a two-dimensional (2D) upright plane. However, is this also true in three-dimensional (3D) space? This study shows the dynamic aspects of the apprehension of projective spatial terms in 3D space by detailing how the rotation of a reference object with an inherent front influences the apprehension of projective spatial terms on a level plane by mapping their spatial categorical patterns. The experiment was designed to examine how spatial categorical patterns on a level plane changed with the rotation of a reference object with an inherent front in 3D computer graphics space. We manipulated the rotation of a reference object with an inherent front at three levels (0°, 90°, and 180° rotations) and examined how such manipulation changed the overall spatial categorical patterns of four basic Japanese projective spatial terms: mae, ushiro, hidari, and migi (similar to in front of, behind, to the left of, and to the right of in English, respectively). The results show that spatial term apprehension was affected by the rotation of the reference object in 3D space. In particular, rotation influenced the mae–ushiro and hidari–migi systems differently. The results also imply that our understanding of projective spatial terms on a level plane in 3D space is affected dynamically by visual information from 3D cues.     

变形汉字的结构方式和笔画数效应

曾捷英等提出并采用了汉字通透性概念解释汉字识别中的字形属性效应,例如笔画数效应、笔画类型效应和结构方式效应。在有关研究中采用的主要实验方法是在速示、重复速示、非速示、时间或空间微观发生等条件下要求被试命名汉字。该研究将采用新的实验方法,即在呈现变形汉字1200ms后要求被试报告识别内容。结构方式和笔画数两种字形属性为研究对象。实验结果表明存在着常规的结构方式效应和笔画数效应,尤为重要的是观察到了逆转的结构方式效应。客观计算出的汉字通透性可以合理地解释这些效应。该研究和先前研究部分证明了关于汉字字形知觉的一个重要假设：汉字通透性是形成各种字形属性效应的基本或主导原因。字形属性对汉字识别的影响可以归结为通透性的影响,这称之为通透性中介假设。     

水平空间与情绪效价联结效应的产生机制

采用词汇效价判断任务,考察水平空间与情绪效价联合效应的产生机制。实验1在被试双手正常放置条件下考察了词汇效价与水平空间联结效应的存在;实验2则要求被试双手交叉放置,以考察当反应手和反应键的空间信息冲突时水平空间与情感效价的关联现象;实验3则进一步考排除反应手的参与,以考察口头报告的反应方式是否对两者的联结效应产生影响。结果表明,不同反应方式下均存在空间情感效价的联结,且此联结更多是反应选择极性编码的结果。     

Liberal naturalism and the scientific image of the world

ABSTRACT

This paper distinguishes between the theoretical scientific image (of the posits of the successful sciences) and the practical scientific image (which, besides explanatory posits, includes everything presupposed by the practices of doing science (e.g. scientists, funding agencies, laboratories, chairs and other artifacts, linguistic communication, a just and democratic ethos). The popular idea that there is a conceptual clash between the scientific and manifest images of the world is revealed as largely illusory. From the perspective of a liberal naturalism, the placement problem for ‘problematic’ entities or truths is not solved but dissolved. Persons, say, are not posits of any explanatory science, but beings acknowledged as rational agencies in second-personal space. Core elements of the manifest image (e.g. persons) are more deeply rooted in our conceptual scheme than any version of the scientific image.