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In three experiments, we investigated the contextual control of attention in human discrimination learning. In each experiment, participants initially received discrimination training in which the cues from Dimension A were relevant in Context 1 but irrelevant in Context 2, whereas the cues from Dimension B were irrelevant in Context 1 but relevant in Context 2. In Experiment 1, the same cues from each dimension were used in Contexts 1 and 2, whereas in Experiments 2 and 3, the cues from each dimension were changed across contexts. In each experiment, participants were subsequently shifted to a transfer discrimination involving novel cues from either dimension, to assess the contextual control of attention. In Experiment 1, measures of eye gaze during the transfer discrimination revealed that Dimension A received more attention than Dimension B in Context 1, whereas the reverse occurred in Context 2. Corresponding results indicating the contextual control of attention were found in Experiments 2 and 3, in which we used the speed of learning (associability) as an indirect marker of learned attentional changes. Implications of our results for current theories of learning and attention are discussed. 相似文献
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Metin Alkan 《欧洲师范教育杂志》1990,13(3):113-121
This article presents an analysis of intercultural education from the viewpoint of the dynamics of agenda building as a political process. In this analysis, particular attention is given to the theoretical and ideological assumptions on which the concept of intercultural education is based. The author contends that the employment of this concept serves the purpose of issue containment within the arena of conflict where educational policy alternatives are determined.
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科学合理的高考政策对于维护边疆少数民族地区经济社会的和谐稳定具有重要作用.应通过制定科学合理、适合边疆民族地区基础教育实际的高考招生政策,采取强硬措施,杜绝高考"移民"现象的反弹,坚决纠正高考中的假"民考汉"现象,做好高考与大学预科模式的衔接工作,实施民族地区师范生免费教育制度,为基础教育改革特别是"双语"教学的开展培养急需的高素质人才.要改革考试方式,实现民族地区高考多元化等措施,使少数民族地区高考政策在"稳疆兴疆,富民固边"战略的实施中、在和谐边疆的建构中发挥出更加重要的作用. 相似文献
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According to the attentional theory of context processing (ATCP), learning becomes context specific when acquired under conditions that promote attention toward contextual stimuli regardless of whether attention deployment is guided by learning experience or by other factors unrelated to learning. In one experiment with humans, we investigated whether performance in a predictive learning task can be brought under contextual control by means of a secondary task that was unrelated to predictive learning, but supposed to modulate participants’ attention toward contexts. Initially, participants acquired cue-outcome relationships presented in contexts that were each composed of two elements from two dimensions. Acquisition training in the predictive learning task was combined with a one-back task that required participants to match across consecutive trials context elements belonging to one of the two dimensions. During a subsequent test, we observed that acquisition behavior in the predictive learning task was disrupted by changing the acquisition context along the dimension that was relevant for the one-back task, while there was no evidence for context specificity of predictive learning when the acquisition context was changed along the dimension that was irrelevant for the one-back task. Our results support the generality of the principles advocated by ATCP. 相似文献
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Karen M. Watt Jeffery Huerta Ersan Alkan 《Community College Journal of Research & Practice》2013,37(10):752-760
This study examined the initial implementation process of Advancement Via Individual Determination (AVID) in a northern California community college. Focus groups of students, faculty, and administrators were conducted in the spring of 2008, as well as observations of several planning meetings in the spring and summer of 2008. The community college students enrolled in the AVID class reported that the support they received through AVID has helped them focus, become more organized, and become more motivated to continue their studies. This was so even though not all of AVID's 11 essentials were implemented on campus. In addition, challenges such as faculty buy-in and resistance to changing institutionalized practices were encountered by staff members responsible for implementing AVID. In this initial implementation, faculty and administration sought to change the culture of the college to better serve the underrepresented students in their quest to transfer to four-year institutions. This study provides a framework for other community colleges and higher education institutions to leverage the academic potential of underprepared and historically underrepresented students. 相似文献
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In two predictive-learning experiments, we investigated the role of the informational value of contexts for the formation of context-specific extinction learning. The contexts were each composed of two elements from two dimensions, A and B. In Phase 1 of each experiment, participants received acquisition training with a target cue Z in context A1B1 (the numbers assign particular values on the context dimensions). In Phase 2, participants were trained with conditional discriminations between two other cues, X and Y, for which only one of the two context dimensions was relevant. In a third phase, participants received extinction trials with cue Z in context A2B2. During a final test phase, we observed that a partial change of the extinction context disrupted extinction performance when the extinction context was changed on the dimension that had been trained as being relevant for the conditional discrimination. However, when the extinction context was changed on the irrelevant context dimension, extinction performance was not affected. Our results are consistent with the idea that relevant contexts receive more attention than do irrelevant contexts, leading to stronger context-specific processing of information learned in the former than in the latter type of contexts. 相似文献
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At&#;c&#; U&#;ur Adem Aylin &#;enol Mehmet Burak Da&#;deviren Metin 《Education and Information Technologies》2022,27(5):5989-6014
Education and Information Technologies - The COVID 19 pandemic not only affected our health and social life in many aspects, but it also changed the classical way of training in classrooms and... 相似文献
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Engin H. Copur Ahmet C. Arican Sinan Ozcan Metin U. Salamci 《Journal of The Franklin Institute》2019,356(15):8388-8413
State Dependent Riccati Equation (SDRE) methods have the considerable advantages over other nonlinear control methods. However, stability issues can be arisen in SDRE based control system due to the lack of the global asymptotic stability property. Therefore, the previous studies have usually shown that local asymptotic stability can be ensured by estimating a Region of Attraction (ROA) around the equilibrium point. These estimated regions for stability may become narrow or the condition to keep the states in this region may be very conservative. To resolve these issues, this paper proposes a novel SDRE method employing an update algorithm to re-estimate the ROA when the states tend to move out of the stable region. The tendency is checked using a condition which is developed based on a new theorem. The theorem proves that it is possible to redesign the previous ROA with respect to the current states lying close to its boundary for ensuring the “non-local” stability along the trajectory without the need of solving SDRE at each time instant, unlike the standard SDRE approach. Therefore, the new theorem is now able to enhance the stability of the SDRE based closed-loop control system. The feasibility of the proposed SDRE control method is tested in both simulations and experiments. A validated 3-DOF laboratory helicopter is used for experiments and the control objective for the helicopter is to realise a preplanned movement in both elevation and travel axes. The results reveal that the proposed SDRE approach enables the controlled plant to track the desired trajectory as satisfactorily as the standard SDRE approach, while only solving SDRE when needed. The proposed SDRE method reduces the computational load for practical implementation of the control algorithm whilst ensuring the stability over the operational region. 相似文献