Time-driven effects on parsing during reading

The phonological trace of perceived words starts fading away in short-term memory after a few seconds. Spoken utterances are usually 2-3 s long, possibly to allow the listener to parse the words into coherent prosodic phrases while they still have a clear representation. Results from this brain potential study suggest that even during silent reading, words are organized into 2-3 s long ‘implicit’ prosodic phrases. Participants read the same sentences word by word at different presentation rates. Clause-final words occurring at multiples of 2-3 s from sentence onset yielded increased positivity, irrespective of presentation rate. The effect was interpreted as a closure positive shift (CPS), reflecting insertion of implicit prosodic phrase boundaries every 2-3 s. Additionally, in participants with low working memory span, clauses over 3 s long produced a negativity, possibly indicating increased working memory load.     

The tilted Hermann grid illusion: 'illusory spots' versus 'phantom bands'

The Hermann grid illusion became a cause célèbre, when it was reported that small figural changes from straight to curved bars abolish the dark illusory spots. We demonstrate that this is not an all-or-none effect; rather, the visual system tolerates some tilt/curviness. We transformed straight and curved Hermann grids to rhombic Motokawa grids by gradually tilting the horizontal bars. Initially, we observed only dark illusory spots, then dark spots combined with phantom bands traversing the rhomb along the minor axis, and finally dark phantom bands only. This shows that two kinds of illusions can coexist in the same grid pattern.     

When does goal discrepancy induce compensatory effort? An application of self‐completion theory to social issues

The authors review research that applies self‐completion theory to goals targeting other people (as in the case of stereotyping and prejudice), goals that aim at the achievement of a certain social identity and goals based on the social identity. It is demonstrated that goal discrepancies lead to compensation for social as well as for non‐social goals. Based on self‐completion theory it is proposed that the identity‐relevance of the respective goal as well as the goal relevance of the subsequent task are of major importance considering the individuals’ compensation. The authors argue that the consideration of these factors advance our understanding of social phenomena.     

Trend and rhythm analysis of time-series data using complex demodulation

Biological time-series data collected over long intervals generally show combined systematic and periodic fluctuations. Comprehensive analysis of such data requires separation of the trend and rhythmic components. Most available time-series analytic techniques do not explicitly extract the trend, and do implicitly assume the underlying rhythms are simple symmetrical sinusoids, whose amplitude and phase values remain constant throughout the recorded interval. Neither assumption is very accurate when dealing with biological data, and the stationarity assumption in particular becomes harder to defend as experiments extend over days or even weeks. Complex demodulation (CD) is described here as a technique for separation of trend from cyclic components, and multiple complex demodulation (MCD) as a technique for extraction of all possible frequencies in the data set, along with their moment-by-moment amplitude and phase values.     

ABILITY PATTERNS AMONG THREE CHINESE COMMUNITIES

The score patterns in eight ability areas were compared among three Chinese communities having differential demands for English competence. A total of 610 9th graders of high academic achievement were selected for the study. The data analyses revealed that the ability patterns significantly differed among groups. Specifically, the Guangzhou group was best in Chinese language usage and verbal reasoning, the Hong Kong group came second, and the Singapore group came third. The superiority order among these groups was reversed in English language usage and verbal reasoning. The Guangzhou and Hong Kong groups excelled in mathematical reasoning. The Hong Kong group was inferior in mechanical reasoning. However, the three groups were not significantly different in spatial and abstract reasonings. The results seem to support the prediction that environmental demands have differential influence on students' ability patterns.     

ROLE OF INFRASTRUCTURE NETWORKS IN SUPPORTING SOCIAL VALUES TO SUSTAIN ECONOMIC SUCCESS IN NEWLY-INDUSTRIALIZED NATIONS

Organizations are evolving into a flatter structure with fewer intermediate organizational levels. Especially, fewer middle managers are needed to relay communications up and down the hierarchy. As information technology is deployed for competitive advantage, fulfilling internal communication becomes as crucial as fulfilling external communications with suppliers and customers. Fulfilling internal communications is especially crucial because incorporation of social (organizational) values and corporate culture requires communication. As the role of communication expands, the role of information technology in promoting communication is fostering experimentation in organizing work and in management practices. For example, electronic mail promotes equality and consensus in a manner that enables participatory rather than authoritarian management. An infrastructure network is a telecommunications network that provides basic communication services on which public, e.g. government, or private organizations depend for their survival. An infrastructure network is distinguished from any ordinary communications facility because it is both pervasive and comprehensive to promote group participation. An infrastructure network is further distinguished by its robustness that allows sufficient bandwidth for substantial resource sharing. Infrastructure networks represent a vital opportunity for newly-industrialized nations in Asia. In these nations, through effective communication, social values related to the ‘group’ will produce a better payoff. This payoff would result from the momentum and partnership experience generated by recent economic success. Also, the relatively smaller size of these nations would enable easier networking. Finally, as demonstrated by their success and as a result of their smaller scale, the ability of these nations to focus on what needs to be done will ensure the wise investment of funds earned from economic success in projects that will guarantee future success. This paper recommends the development of infrastructure networks including national and local networks as well as gateways (to other national networks) and other network, e.g. data bases, resources. The involvement of all constituencies, government and education as well as the private sector, will encourage experiments with information technology in organizing work and in management practices that incorporate social values.     

Learning conditional frequencies in a probability learning task

The study was prompted by a theoretical discussion of probability learning by Estes (1976). In three separate experiments, subjects were presented with frequency information in the form of wins and losses among 3 teams, and later predicted future wins and losses. Frequencies were devised so that conditional win frequencies for a pair of teams were either inconsistent or consistent with marginal win frequencies for each team. In experiment 1, when subjects predicted future events on the basis of known past frequencies, predictions were generally based on conditional frequencies. In experiment 2 six blocks of observations were presented, with predictions following each block. What little learning did occur was in the direction of the conditional frequencies. Subjects in experiment 3 were able to learn conditional frequencies when given explicit instructions to do so. Results were discussed in terms of a two-stage hypothesis generation model that might operate within the framework of an associative theory of probability learning.     

加工水平对不同类型内隐记忆测试的影响

许多内隐记忆研究表明 ,加工水平影响外显记忆而不影响内隐记忆 ,这样的实验结果被一些研究者认为是外显记忆与内隐记忆系统分离的重要依据之一。实际上 ,内隐记忆研究中的加工水平问题一直存在争议 ,加工水平效应作为两类记忆系统分离的依据是不充分的。在我们的这项实验中 ,结果表明 ,加工水平影响概念样例生成这种内隐记忆测试而不影响知觉辨认测试。     

双任务并存条件下的信息提取

将短时记忆再认与长时记忆范畴判断两类不同性质的信息提取任务相并列,探讨了双任务条件下的信息提取过程是如何进行的。实验结果表明,双任务并存时,ｎｏ反应的总平均反应时不等于两种任务单独进行时各自ｎｏ反应的平均反应时之和（减去一次视觉动作反应时后）,而是与其中一个较后完成的过程的ｎｏ反应平均反应时相近。因此推断双任务并存时,信息提取过程不是完成一个再进行另一个的系列加工过程,而是二者同时平行加工的过程。