Generating keywords improves metacomprehension and self-regulation in elementary and middle school children

The ability to monitor understanding of texts, usually referred to as metacomprehension accuracy, is typically quite poor in adult learners; however, recently interventions have been developed to improve accuracy. In two experiments, we evaluated whether generating delayed keywords prior to judging comprehension improved metacomprehension accuracy for children. For sixth and seventh graders, metacomprehension accuracy was greater when generating keywords. By contrast, for fourth graders, metacomprehension accuracy did not differ across conditions. Improved metacomprehension accuracy led to improved regulation of study. The delayed keyword effect in children reported here is discussed in terms of situation model activation.     

Sequential sampling models of human text classification

Text classification involves deciding whether or not a document is about a given topic. It is an important problem in machine learning, because automated text classifiers have enormous potential for application in information retrieval systems. It is also an interesting problem for cognitive science, because it involves real world human decision making with complicated stimuli. This paper develops two models of human text document classification based on random walk and accumulator sequential sampling processes. The models are evaluated using data from an experiment where participants classify text documents presented one word at a time under task instructions that emphasize either speed or accuracy, and rate their confidence in their decisions. Fitting the random walk and accumulator models to these data shows that the accumulator provides a better account of the decisions made, and a “balance of evidence” measure provides the best account of confidence. Both models are also evaluated in the applied information retrieval context, by comparing their performance to established machine learning techniques on the standard Reuters‐21578 corpus. It is found that they are almost as accurate as the benchmarks, and make decisions much more quickly because they only need to examine a small proportion of the words in the document. In addition, the ability of the accumulator model to produce useful confidence measures is shown to have application in prioritizing the results of classification decisions.     

试论程颐对今本《周易》古经分篇的义理阐释

通行本<周易>古经分为上下两篇.对于其何以如此分篇,生当北宋的易学家程颐,在承继、整合<易传·序卦>和<易纬·乾凿度>等的观点的基础上,作<上下篇义>,明确提出以阴阳为基准分篇的原则,指明"阳盛者居上篇,阴盛者居下篇",并逐卦作了分析,丰富了人们在此领域的识见.     

上博馆藏楚竹书《周易》初析

本文是最近面世的上海博物馆藏楚竹书<周易>的初步研究成果.本文认为:1.从"数图形卦"分析楚竹书<周易>的卦符,由于这卦符纯以一与八这两数来表达,体现了与长沙马王堆帛书本<周易>同类的历史、人文水平,而稍晚于阜阳简本<周易>;2.楚竹书<周易>所以有"经"无"传",是因为尊"经"贬"传"的缘故;3.楚竹书<周易>的"同卦同类符号"即首符、尾符相同的文本现象,并不能证明"对立与统一"的辩证法思想,符号匚也不是楚竹书<周易>具有"上、下部分"的证明.本文对以上见解进行了有据有理的分析.     

Evidence for dissociable neural mechanisms underlying inference generation in familiar and less-familiar scenarios

In this study, we investigated whether the left and right hemispheres are differentially involved in causal inference generation. Participants read short inference-promoting texts that described either familiar or less-familiar scenarios. After each text, they performed a lexical decision on a letter string (which sometimes constituted an inference-related word) presented directly to the left or right hemisphere. Response-time results indicated that hemisphere of direct presentation interacted with type of inference scenario. When test stimuli were presented directly to the left hemisphere, lexical decisions were facilitated following familiar but not following less-familiar inference scenarios, whereas when test stimuli were presented directly to the right hemisphere, facilitation was observed in both familiar and less-familiar conditions. Thus, inferences may be generated in different ways depending on which of two dissociable neural subsystems underlies the activation of background information.     

Exploring automaticity in text processing: syntactic ambiguity as a test case

A prevalent assumption in text comprehension research is that many aspects of text processing are automatic, with automaticity typically defined in terms of properties (e.g., speed and effort). The present research advocates conceptualization of automaticity in terms of underlying mechanisms and evaluates two such accounts, a computational-efficiency account (underlying computational processes become more efficient with practice) and a memory-based processing account (the underlying basis of processing shifts with practice, from computing interpretations to retrieving prior interpretations). In five experiments, short texts containing either an ambiguous or unambiguous syntactic structure were presented for multiple study trials. In both conditions, reading times in target regions decreased across trials, indicating automatization. Several findings supported the memory-based processing account (e.g., practice effects were largely item-specific, reading times were longer for ambiguous versus unambiguous sentences on early trials but converged on later trials) Some evidence was also found for a contribution of gains in computational efficiency (i.e., some item-general practice effects were observed). Implications for research on automaticity and text processing are discussed.     

Duplicate publication and ‘paper inflation’ in the fractals literature

The similarity of documents in a large database of published Fractals articles was examined for redundancy. Three different text matching techniques were used on published Abstracts to identify redundancy candidates, and predictions were verified by reading full text versions of the redundancy candidate articles. A small fraction of the total articles in the database was judged to be redundant. This was viewed as a lower limit, because it excluded cases where the concepts remained the same, but the text was altered substantially. Far more pervasive than redundant publications were publications that did not violate the letter of redundancy but rather violated the spirit of redundancy. There appeared to be widespread publication maximization strategies. Studies that resulted in one comprehensive paper decades ago now result in multiple papers that focus on one major problem, but are differentiated by parameter ranges, or other stratifying variables. This ‘paper inflation’ is due in large part to the increasing use of metrics (publications, patents, citations, etc) to evaluate research performance, and the researchers’ motivation to maximize the metrics. The views in this paper are solely those of the authors, and do not necessarily represent the views of the Department of the Navy or any of its components, UNAM, University of Virginia or University of Karlsruhe.     

Interpretation of ambiguous information in clinical depression

The present study used two cognitive tasks--a text comprehension task and a homophone task--to investigate whether clinically depressed individuals have a negative bias when interpreting ambiguous information. Previous research indicates that both tasks are sensitive to anxiety-related interpretive biases, and that the former is less prone to response bias effects. Negative memory biases were also assessed. Results showed that, compared with normal controls, depressed individuals made more negative interpretations on the homophone task, and they also showed an enhanced negative recall bias. However, the groups did not differ in interpretative bias on the text comprehension task. Possible explanations of the results are discussed, including the potential influences of self-referent processing and response bias.     

在"理性史"与"理念诗"之间--哲学史上经典之解释与人物之个性的关系问题

本论文所欲讨论者,将主要集中于哲学史上个人之性情、个性对该哲学本文所表达之观念的影响,以及我们对此所应持的诠释态度。对于中国传统哲学而言,经典本文之理解与人物个性之品评当得其有机之结合,方能再现“理性史之纹路”与“理念诗之魅力”,如是,我们也便有相当的理由质疑那种一开始就用某种预设了的、严格的因果对应的方式来图解思想家之思想的努力,同时,我们也可以在相当程度上避免因“过度诠释”所导致的诠释者对本文及其所赖于产生的周围世界的轻忽和放逐。     

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.