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921.
不同发展阶段的习得性长时程突触增强对新学习的影响 总被引:1,自引:0,他引:1
在慢性实验条件下观察到大鼠由学习训练所产生的海马CA_3区习得性长时程突触增强,它的不同发展阶段对新学习任务的习得有不同的作用:(1)在它的形成阶段及巩固阶段对新学习均有易化作用,虽然两个阶段突触效应增强的程度都处于相同的高水平,但后者的易化作用相对要大些,提示这两个发展阶段突触的可塑性变化是有差异的;还有,新学习任务的训练并没有引起突触效应的进一步增强,表明突触效应的长时程增强有“饱和”现象。(2)在它消退后,对新学习任务的习得没有影响。上述结果提示学习的组织形式不同,可从突触机制上影响学习的效果,并进一步证明习得性长时程突触增强是学习和记忆的神经基础。 相似文献
922.
923.
青年人和老年人的元记忆与记忆能力关系的比较研究 总被引:2,自引:0,他引:2
采用自编“元记忆简短问卷”和“成人元记忆问卷”,对90例被试(分为青年、老年和老老年组)进行元记忆及其与记忆关系的比较研究。结果表明:(1)预测记词对数和记图数随增龄而减少,年龄差异明显。评估准确性未显示年龄差异。训练后,预测成绩明显提高,但评估准确性未见提高。测后自评与预测情况相似,但其准确性高于预测,元记忆可能通过记忆过程而有提高;(2)自信程度和使用方法数均随增龄而减少,可能这是影响记忆成绩的重要因素;(3)联想学习和图象自由回忆成绩均与“元记忆简短问卷”和“成人元记忆问卷”的各项自评有不同程度的相关,表明元记忆与记忆关系密切。 相似文献
924.
我国超常儿童研究的进展及其问题 总被引:6,自引:1,他引:5
作者在回顾了我国超常儿童研究领域近20年来的进展,总结了该领域的主要成绩,特别是方法上所取得的成绩的基础上,指出了当前尚存在的若干问题,这些问题的提出可能对今后该领域的研究有一定的目标。 相似文献
925.
E-learning systems are capable of providing more adaptive and efficient learning experiences for learners than traditional classroom settings. A key component of such systems is the learning policy. The learning policy is an algorithm that designs the learning paths or rather it selects learning materials for learners based on information such as the learners’ current progresses and skills, learning material contents. In this article, the authors address the problem of finding the optimal learning policy. To this end, a model for learners’ hierarchical skills in the E-learning system is first developed. Based on the hierarchical skill model and the classical cognitive diagnosis model, a framework to model various mastery levels related to hierarchical skills is further developed. The optimal learning path in consideration of the hierarchical structure of skills is found by applying a model-free reinforcement learning method, which does not require any assumption about learners’ learning transition processes. The effectiveness of the proposed framework is demonstrated via simulation studies. 相似文献
926.
Despite numerous studies demonstrating that authoritarian leadership and benevolent leadership exert incompatible influence on an individual’s creativity, the combined effects of authoritarian leadership and benevolent leadership on an individual’s creativity and the related mechanisms have yet to be explained. This study tests a model that considers the combined effects of authoritarian and benevolent leadership on graduate student creativity in the universities in China, while also examining the mediating role of the intrinsic motivation of graduate students. Multisource data were collected from 297 graduate students in 60 university scientific research teams in China. The results show that when authoritarian leadership and benevolent leadership are in congruence, the intrinsic motivation of graduate students and their creativity increase as supervisor authoritarianism and benevolence increases. When authoritarian leadership and benevolent leadership are in discrepancy, the intrinsic motivation of graduate students is higher when low supervisor authoritarianism is combined with high benevolence; however, the findings also show that low authoritarian leadership combined with high benevolent leadership would not increase graduate student creativity. The relationship between authoritarian–benevolent leadership and graduate student creativity is partially mediated by intrinsic motivation. The theoretical and practical implications of the results are discussed. 相似文献
927.
Prior work suggests that follower and leader risk orientation is positively associated with follower creativity. We suggest that this view is oversimplified and propose that follower creativity can be stimulated when leader and follower have diverging risk orientations. We, therefore, apply a configurational approach to creativity, evaluating varying combinations of leader and follower risk orientation on follower creativity. Across two field studies, we demonstrate that (a) follower creativity increases as leaders’ and followers’ risk orientations become more discrepant (i.e., incongruent); (b) follower creativity is higher when leader–follower dyads are congruent at moderate levels of risk orientation compared to congruence at the extremes (i.e., low and high levels); (c) follower‐experienced intellectual stimulation mediates the relationship between leader–follower risk orientation incongruence and congruence and follower creativity; and (d) that leader authority openness moderates the indirect effect of leader–follower risk orientation incongruence on creativity via follower‐experienced intellectual stimulation. Theoretical and practical implications specific to creativity and leader–follower relationships are discussed. 相似文献
928.
Xu Jiang Lue Fang Brianna R. Stith Ru-de Liu E. Scott Huebner 《Applied research in quality of life》2018,13(4):1081-1095
The present study reported the initial validation of an abbreviated version of the Students' Life Satisfaction Scale- Chinese version (SLSS-Chinese) in two samples of Chinese middle school students. Initial analyses based on the original 7-item scale suggested that the two reverse-worded items functioned differently compared to other items. The plausible reasons behind this finding were discussed based on extant literature on mixed worded scales and cross-cultural research on life satisfaction scales. Then we compared the validity of three formats of the SLSS-Chinese: the 7-item (full scale), the 5-item (positively worded items only), and the 2-item (reverseworded items only) scales, respectively. Convergent evidence suggested that the two reverse-worded items hampered the scale's internal consistency, dimensionality, and validity. Also, the 5-item scale demonstrated good psychometric properties, and was clearly superior compared to the 7-item scale. These findings provide a solid foundation for applying the 5-item SLSS-Chinese in measuring Chinese adolescents' life satisfaction. 相似文献
929.
Ping Xu Claudia González-Vallejo Justin Weinhardt Janna Chimeli Figen Karadogan 《Memory & cognition》2018,46(2):298-314
The familiarity difference cue has been regarded as a general cue for making inferential judgments (Honda, Abe, Matsuks, & Yamagishi in Memory and Cognition, 39(5), 851–863, 2011; Schwikert & Curran in Journal of Experimental Psychology: General, 143(6), 2341–2365, 2014). The current study tests a model of inference based on familiarity differences that encompasses the recognition heuristic (Goldstein & Gigerenzer, 1999, Goldstein & Gigerenzer in Psychological Review, 109(1), 75–90, 2002). In two studies, using a large pool of stimuli, participants rated their familiarity of cities and made choices on a typical city-size task. The data were fitted with the r-s model (Hilbig, Erdfelder, & Pohl in, Journal of Experimental Psychology: Learning Memory and Cognition, 37(4), 827–839, 2011), which was adapted to include familiarity differences. The results indicated that people used the familiarity difference cue because the participants ignored further knowledge in a substantial number of cases when the familiarity difference cue was available. An analysis of reaction-time data further indicated that the response times were shorter for heuristic judgments than for knowledge-only-based judgments. Furthermore, when knowledge was available, the response times were shorter when knowledge was congruent with a heuristic cue than when it was in conflict with it. Differences between the familiarity difference cue and the fluency heuristic (Schooler & Hertwig, 2005, Psychological Review, 112, 610–628) are discussed. 相似文献
930.
In the current study, late Chinese–English bilinguals performed a facial expression identification task with emotion words in the task-irrelevant dimension, in either their first language (L1) or second language (L2). The investigation examined the automatic access of the emotional content in words appearing in more than one language. Significant congruency effects were present for both L1 and L2 emotion word processing. Furthermore, the magnitude of emotional face-word Stroop effect in the L1 task was greater as compared to the L2 task, indicating that in L1 participants could access the emotional information in words in a more reliable manner. In summary, these findings provide more support for the automatic access of emotional information in words in the bilinguals’ two languages as well as attenuated emotionality of L2 processing. 相似文献