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1.
A common assumption is that expectancies of reward events in instrumental tasks are established on the basis of Pavlovian conditioning. According to the tandem hypothesis, tested in the four runway investigations reported here employing rats, memories of reward events may serve as the conditioned stimuli eliciting expectancies. In Experiments 1–3, rats were trained under a schedule of partial reward (P), which did not produce increased resistance to extinction, and subsequently shifted to consistent reward (C). According to the tandem hypothesis, the shift to the C schedule should result in increased resistance to extinction if, as hypothesized, under the P schedule the memory of reward, SR, came to elicit the expectancy of nonreward,EN. This hypothesis was confirmed under a variety of conditions. It was shown that increased resistance to extinction could not be attributed to the P schedule alone, to the rats receiving two schedules, P and C, to stimuli other than SR eliciting EN, or to the rats forgetting reward-produced memories when expecting nonreward (Experiment 4). It was shown that the tandem hypothesis could explain the divergent findings obtained in prior studies employing a shift from P to C as well as in the present study. 相似文献
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Research in Higher Education - Given a revived national discourse about rural populations, more educational research on rural students is necessary, including ways that rural students transition to... 相似文献
3.
Suzan Verberne Eva D’hondt Antal van den Bosch Maarten Marx 《Information processing & management》2014
We digitized three years of Dutch election manifestos annotated by the Dutch political scientist Isaac Lipschits. We used these data to train a classifier that can automatically label new, unseen election manifestos with themes. Having the manifestos in a uniform XML format with all paragraphs annotated with their themes has advantages for both electronic publishing of the data and diachronic comparative data analysis. The data that we created will be disclosed to the public through a search interface. This means that it will be possible to query the data and filter them on themes and parties. We optimized the Lipschits classifier on the task of classifying election manifestos using models trained on earlier years. We built a classifier that is suited for classifying election manifestos from 2002 onwards using the data from the 1980s and 1990s. We evaluated the results by having a domain expert manually assess a sample of the classified data. We found that our automatic classifier obtains the same precision as a human classifier on unseen data. Its recall could be improved by extending the set of themes with newly emerged themes. Thus when using old political texts to classify new texts, work is needed to link and expand the set of themes to newer topics. 相似文献
4.
The GoNorth! Adventure Learning (AL) Series delivered educational programs about global climate change and sustainability from 2006 to 2010 via a hybrid-learning environment that included a curriculum designed with activities that worked in conjunction with the travels of Team GoNorth! as they dog sledded throughout the circumpolar Arctic. This study addresses a gap in the AL literature by identifying factors that lead to high levels of student engagement and reveals strategies for instructional designers and educators on how to design emotionally engaging online learning environments. A mixed methods study was conducted to explore patterns of learner engagement in relation to two AL programs: GoNorth! Fennoscandia 2008 and GoNorth! Nunavut 2009. Survey data were drawn from a total of 101 students in 2008 and 2009. 相似文献
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Antonette Aragon Suzan AlDoubi Karen Kaminski Sharon K. Anderson Nelda Isaacs 《TechTrends》2014,58(2):25-31
The number of educators, administrators, and institutions that utilize social networking has increased dramatically. Many have adopted social networking in order to be up-to-date and connected with their students’ learning beyond the boundaries of the classroom. However, this increase in the use of social networking in academia presents many potential issues. In this paper, we address the growing prevalence of social networking in education and some of the issues. Next, we use social role theory to explore some pitfalls for educators using social networking. Finally, we suggest that foundational ethical principles from the field of psychology can provide a basis for developing guiding principles for use of social networking in education. 相似文献
6.
The greater the dissimilarity between exteroceptive stimuli, the easier it is to discriminate between them. To determine whether a similar relationship holds for memories produced by reward events, rats in three runway investigations received trials in pairs, the number of food pellets (0.045 g) occurring on Trial 1 indicating whether reward or nonreward would occur on Trial 2. In each investigation, discriminative responding on Trial 2 was better the larger the difference in reward magnitude on Trial 1. This finding was obtained under a wide variety of conditions: for example, when the larger of two reward magnitudes on Trial 1 signaled nonreward on Trial 2 (Experiment 1, 10 vs. 2 pellets); when the smaller of two reward magnitudes on Trial 1 signaled nonreward on Trial 2 (Experiment 2, 10 vs. 2 pellets); and when the same magnitude of reward on Trial 1 signaled nonreward on Trial 2 (Experiment 3, either 5 pellets or 0 pellets). The findings obtained here indicate that the greater the dissimilarity between reward magnitudes, the greater the dissimilarity between the memories they produced and, thus, the easier it is to discriminate between them. It is suggested that the present results may provide a basis for understanding findings obtained in other instrumental learning investigations in which reward magnitude is varied. 相似文献
7.
Working memory is considered a well-established predictor of individual variation in reading comprehension in children and adults. However, how storage and processing capacities of working memory in both the phonological and semantic domain relate to reading comprehension is still unclear. In the current study, we investigated the contribution of phonological and semantic storage, and phonological and semantic processing to reading comprehension in 123 Dutch children in fifth grade. We conducted regression and mediation analyses to find out to what extent variation in reading comprehension could be explained by storage and processing capacities in both the phonological and the semantic domain, while controlling for children’s decoding and vocabulary. The analyses included tasks that reflect storage only, and working memory tasks that assess processing in addition to storage. Regression analysis including only storage tasks as predictor measures, revealed semantic storage to be a better predictor of reading comprehension than phonological storage. Adding phonological and semantic working memory tasks as additional predictors to the model showed that semantic working memory explained individual variation in reading comprehension over and above all other memory measures. Additional mediation analysis made it clear that semantic storage contributed indirectly to reading comprehension via semantic working memory, indicating that semantic storage tapped by working memory, in addition to processing capacities, explains individual variation in reading comprehension. It can thus be concluded that semantic storage plays a more important role in children’s reading comprehension than previously thought. 相似文献
8.
Reading span as a measure of L1 or L2 working memory capacity is shown to be related to L2 reading comprehension. Albeit limited, there is research on the relationship between both L1 and L2 reading spans and their roles in L2 reading comprehension, yet these studies take reading as a global construct rather than delving into its multi‐level representational architecture. This study differentiates itself from previous research in that it investigates the relationship of both L1 and L2 reading spans to L2 reading comprehension, while taking into account two reading dimensions, namely, literal understanding and inferential comprehension. Findings reveal no significant difference between L1 and L2 storage capacities, although task processing in L1 is more accurate compared to that in L2. Generally, L1 and L2 processing tasks correlate positively as do L1 and L2 stoarge tasks. Finally, only L2 reading span has a meaningful relationship with L2 inferential comprehension. 相似文献
9.
Ayers SF 《Research quarterly for exercise and sport》2004,75(3):272-287
The value of conceptual physical education knowledge has long been acknowledged (American Alliance for Health, Physical Education, and Recreation, 1969; Kneer, 1981; NASPE, 1995) yet has not been formally measured or assessed. Seven multiple choice tests with established validity and reliability (Ayers, 2001b) were used to assess the concepts identified in Mohnsen's text (1998). Tests were administered to 3,263 high school students at the schools of 17 NASPE Teachers of the Year in 16 states. On all tests, girls outscored boys, and Caucasians outscored all other racial groups. Examinees' average performance on each test was: motor development (65%), exercise physiology (62%), social psychology (60%), biomechanics (57%), aesthetic experiences (56%), motor learning (53%), and historical perspectives (49%). Analyses of each area determined concepts students knew and did not know. 相似文献
10.
In higher education, students are exposed to regular feedback about their performance, and a prominent aspect of students’ attention to feedback concerns the extent to which grades are consistent with what a student has expected to receive. Any discrepancies that arise can result in negative justice perceptions, which research has shown are associated with negative cognitive, emotional and behavioral consequences. However the extent of, and consequences of, these negative justice perceptions within the learning process have gone largely unexplored. This study investigates the relationship between expectation/performance discrepancies, justice perceptions, student satisfaction and self‐efficacy. In particular, we found an interaction between the grade received and negative justice perceptions; poor performers with negative justice perceptions were more likely to have lower subsequent self‐efficacy and satisfaction than those who did not have injustice perceptions. However, self‐efficacy rose for those who had negative justice perceptions if they also received moderate to high performance feedback. The results reflect the complexity of cognitive and behavioral responses to performance feedback. Implications for grading and recommendations for reducing injustice perceptions are discussed. 相似文献