Pigeons' spatial memory: factors affecting delayed matching of key location.

The delayed-matching-to-sample procedure was modified to study pigeons' spatial memory. Nine pecking keys, arranged as a three-by-three matrix, served as the spatial cues. Trials began with a brief "ready" stimulus (dimming of the houselight). Then a randomly chosen key was lit briefly as a sample. After a short delay the sample key was lit again along with one of the other eight keys. A peck at the key that had served as the sample produced grain reinforcement, where as a peck to the other key produced only the intertrial interval. After delayed matching of key location was learned, the effects of sample and delay duration, number of keys illuminated as sample and comparisons, and organization of three-key samples were studied. Matching accuracy decreased as sample duration decreased, delay increased, the number of locations serving as samples increased, the number and proximity of comparisons increased, and when the three-key samples were "discontinuous" rather than "lines".     

阿拉伯数字与汉字大写数字认知的大脑功能一侧化实验研究

用半视野速示术检查阿拉伯数字和汉字大写数字在三种任务加工条件（认读、简单相加、奇偶概念异同判断）下进行认知的大脑两半球机能活动一侧化效应。结果表明：以被试正确反应的百分数为指标,两类数字的三种任务加工均没有表现出明显的视野（大脑半球）优势。以被试正确反应的反应时为指标,两类数字的认读和简单相加也未出现视野（大脑半球）的明显差别,而两类数字的奇偶概念异同判断却出现了差异显著的右视野（左半球）优势。     

Curry-Howard Terms for Linear Logic

In this paper we 1. provide a natural deduction system for full first-order linear logic, 2. introduce Curry-Howard-style terms for this version of linear logic, 3. extend the notion of substitution of Curry-Howard terms for term variables, 4. define the reduction rules for the Curry-Howard terms and 5. outline a proof of the strong normalization for the full system of linear logic using a development of Girard's candidates for reducibility, thereby providing an alternative to Girard's proof using proof-nets.     

大学生空间思惟的性别差异研究

本实验运用填图和拼图两项测验,通过对137名大学生被试进行研究,结果表明,就大学生这一层次而言,男女两性的空间思惟在整体上表现出的差异不具显著性,整个分布情况是:在连续分布的两端男生均高于女生。研究结果也表明,在空间思惟上,大学生也存在着明显的个性差异。     

Salient Color Terms in Four Languages

Elicited lists of color terms were used to investigate the relative salience of basic and nonbasic color terms in four languages. Salience was operationalized in terms of frequency of mention and mean rank sequence of appearance on the lists. Primary basic terms were generally found to be the most salient, followed by derived basic and nonbasic terms, in that order. However, in some of the group lists the nonbasic terms beige, turquoise, navy blue and sky blue were found to have higher frequencies of mention and/or higher mean sequence ranks than some derived basic terms. The possible basicness of these terms is discussed.     

Adult's failures on euclidean and projective spatial tasks: Implications for characterizing spatial cognition

In their initial study of the development of children's spatial concepts, Piaget and Inhelder (1956) designed the “water-level” and “plumb-line” tasks to assess children's Euclidean abilities to perceive and represent horizontals and verticals. Surprisingly, subsequent research has shown that many adults perform badly on these tasks designed for children. Here we studied whether adults (N=160) would also have difficulty on a shadow projection task developed to assess theoretically related projective spatial concepts. The data showed that some adults had difficulty on the shadow task, whether tested by a drawing or by a selection task, and whether scored with respect to qualitative shape or metric accuracy. Performance was significantly worse on complex than simple forms, and when sex differences emerged, they favored males. As hypothesized, the best predictor of shadow performance was performance on the Euclidean tasks. Scores on the Embedded Figures Test and participant sex accounted for small (but significant) additional variance on shadow performance. Implications for theories of spatial development and for modeling individual differences in spatial cognition are discussed.     

多视点学习条件下空间表征的朝向特异性

让被试在没有外界参照线索的条件下,从三个观察视点学习物体场景,首次以局部场景再认范式探讨了空间记忆中场景表征的朝向特异性。结果表明：（1）多视点学习条件下,场景空间表征依然是依赖于特定朝向的,不支持空间表征独立于朝向和空间表征依赖于多个观察朝向的观点。（2）场景空间表征的朝向依赖性不仅表现于方位判断任务,也同样表现于场景再认任务。（3）场景本身的内在结构对空间表征中参照系的选取有重要影响。     

Psychodynamic assessment of changes in children with autism under psychoanalytic treatment

In this article the authors report insights into autism developed through their extensive experience of psychoanalytic therapy with children with autism. The fi rst stages of body psychic development are seriously disrupted by this pathology, resulting in primitive anxieties of falling and of being liquefi ed. These anxieties are connected to the fragile development of body ego and of its related spatiotemporal organisation. The changes in children observed by the authors during the therapeutic process lead them to offer a psychodynamic assessment tool, which revolves principally around the development of body ego. After the initial state of 'severe autism', the authors describe three stages: the stage of 'recovery of the skin' (Bick); the established 'symbiotic phase', subdivided into 'vertical then horizontal splitting of the body ego'; and fi nally the stage of 'individuation'. First, the authors describe the principal psychoanalytic approaches to autism and refl ect on the links possible with nonpsychoanalytic work.     

How Important Is the Digital Divide? The Relation of Computer and Videogame Usage to Gender Differences in Mental Rotation Ability

Researchers interested in the associations of gender with spatial experience and spatial ability have not yet focused on several activities that have become common in the modern digital age. In this study, using a new questionnaire called the Survey of Spatial Representation and Activities (SSRA), we examined spatial experiences with computers and videogames in a sample of nearly 1,300 undergraduate students. Large gender differences, which favored men, were found in computer experience. Although men and women also differed on SAT scores, gender differences in computer experience were still apparent with SAT factored out. Furthermore, men and women with high and low levels of computer experience, who were selected for more intensive study, were found to differ significantly on the Mental Rotations Test (MRT). Path analyses showed that computer experience substantially mediates the gender difference in spatial ability observed on the MRT. These results collectively suggest that the “Digital Divide” is an important phenomenon and that encouraging women and girls to gain spatial experiences, such as computer usage, might help to bridge the gap in spatial ability between the sexes.     

可旋转地图和固定地图的定位效率研究

本研究采用两个分实验,分别比较了在空白背景与复杂背景上地图旋转与地图固定两种导航方式下被试的方位判断反应时之间的差异,然后考察两种背景在两种导航方式差异上的一致性问题。结果发现,在运动点的运动方向为朝上、朝左和朝右时,对于空白背景,地图旋转方式下的反应时显著低于地图固定方式;而对于复杂背景,两种导航方式下的反应时之间不存在显著差异。在运动点的运动方向为朝下时,对于两种背景,地图旋转方式的反应时均显著低于地图固定方式。这一结果基本证实了本研究的假设,即被试利用地图进行空间定向的认知过程包括心理旋转与目标搜索两个阶段。