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171.
Chunking mechanisms in human learning 总被引:2,自引:0,他引:2
Gobet F Lane PC Croker S Cheng PC Jones G Oliver I Pine JM 《Trends in cognitive sciences》2001,5(6):236-243
Pioneering work in the 1940s and 1950s suggested that the concept of 'chunking' might be important in many processes of perception, learning and cognition in humans and animals. We summarize here the major sources of evidence for chunking mechanisms, and consider how such mechanisms have been implemented in computational models of the learning process. We distinguish two forms of chunking: the first deliberate, under strategic control, and goal-oriented; the second automatic, continuous, and linked to perceptual processes. Recent work with discrimination-network computational models of long- and short-term memory (EPAM/CHREST) has produced a diverse range of applications of perceptual chunking. We focus on recent successes in verbal learning, expert memory, language acquisition and learning multiple representations, to illustrate the implementation and use of chunking mechanisms within contemporary models of human learning. 相似文献
172.
Involuntary shifts in attention to irrelevant stimuli were studied in elderly and young volunteers during a dichotic-listening task. Event-related potentials and behavioral measures were recorded. Volunteers heard pairs of tones presented with 2 different stimulus onset asynchronies (SOAs). To-be-ignored tones were presented to the left ear, followed by to-be-attended tones to the right ear. Left-ear tones were a frequent standard (700 Hz) and an infrequent small (650 Hz) and large (500 Hz) deviant. Right-ear tones (1500 Hz) were presented with 2 equiprobable intensities. Volunteers responded to the lower intensity stimulus. Behavioral performance was impaired at the short SOA when to-be-ignored large deviants preceded to-be-attended targets, but more so for the elderly volunteers. Large deviants also elicited the mismatch negativity (MMN) and P3a for both age groups. It was concluded that the more impaired behavioral performance observed for the elderly was due to greater sensitivity to output from the MMN system by a frontal lobe system responsible for the maintenance of attentional focus. 相似文献
173.
This paper contains two studies which set out to examine to what extent attributional style (internal, stable, global) and personality traits predicted happiness and psychiatric symptoms in a normal, non-clinical, population of young people in their early twenties. Two hundred and three participants completed five questionnaires: the Attributional Style Questionnaire (ASQ) (version one & version two), Eysenck Personality Questionnaire, Oxford Happiness Inventory, and Langner 22-Item Measure. Sample 1 (n = 120) completed ASQ version one (in both positive and negative situations) and sample 2 (n = 83) completed ASQ version two (in expanded negative situations). Regressional analysis showed that ASQ (in both versions) was the significant predictor of happiness and mental health accounting for 20% to 38% of variances. The ASQ was significantly associated with extraversion and neuroticism. Further, with happiness and mental health as dependent variables and attributional style, personality traits, and demographic variables as independent variables respectively, extraversion and attributional stability (in positive situations) were the significant predictors of happiness accounting for 59% of the total variance whilst neuroticism and psychoticism were the significant predictors of mental health accounting for 53% of the total variance. The results indicated that optimistic attributional style in positive situations was a stronger predictor of self-reported happiness than mental health and pessimistic attributional style in negative situations was a predictor of both happiness and mental health. Extraverts tended to have optimistic explanatory style for positive outcomes whereas neurotics tended to have pessimistic explanatory style for negative outcomes. 相似文献
174.
Two competing psychological approaches to causal learning make different predictions regarding what aspect of perceived causality is generalized across contexts. Two experiments tested these predictions. In one experiment, the task required a judgment regarding the existence of a simple causal relation; in the other, the task required a judgment regarding the existence of an interaction between a candidate cause and unobserved background causes. The task materials did not mention assessments of causal strength. Results indicate that causal power (Cartwright, 1989; Cheng, 1997) is the mental construct that people carry from one context to another. 相似文献
175.
从中医学及其与热力学的关联分析角度来认识亚健康的现象和实质."整体观念,以平为期"是中医学与热力学共同的理论基础.亚健康是人体处于"无序"的熵增状态,亚健康的干预就是人体从外界吸收"负熵流",降低系统紊乱度,从而达到新的有序状态,恢复健康.亚健康状态可以用热力学基本状态函数刻画,运用中医学的思维模式和热力学的研究方法,可构建基于热力学的亚健康诊断方法,进而为亚健康研究提供一个新的视角. 相似文献
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177.
汉语图片命名中获得年龄的作用 总被引:6,自引:0,他引:6
不同语种的研究都发现获得年龄是影响图片命名和词汇命名的重要因素。该研究对汉语图片命名中获得年龄的作用进行了初步探讨。研究分为两部分,第一部分让20名大学生对187幅选自Snodgrass和Vanderwart图片集的线条画的名称的获得年龄进行了评定;第二部分以该187幅图片为刺激,30名大学生被试对图片进行命名反应。以命名反应时为因变量,采用多重回归分析,发现除了名称一致性和概念熟悉性,获得年龄是图片命名反应时的主要预测指标,并没有发现词频的效应。文章对此结果进行了讨论。 相似文献
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180.
Zhongtang Cheng 《Frontiers of Philosophy in China》2007,2(2):188-205
This article describes the logic paradigm in the “Mobian” 墨辩 (the debate theory of the Mohist school) investigation from the point of view of hermeneutics, discloses the relationship
between the overinterpretation tradition in China and the logic paradigm in the “Mobian” investigation, observes the overinterpretation of the “Mobian” by the creators and supporters of the logic paradigm from Liang Qichao and Hu Shi to the modernists, including mathematical
logicians, and analyzes Shen Youding’s reflections on the logic paradigm in his later life.
Translated by Huang Deyuan (proofread by Hsiung Ming) from Xueshu Yanjiu 学术研究 (Academic Research Journal), 2005, (1): 49–56 相似文献