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Reflection is a term which appears often in the discourse of online postsecondary education, where it is typically offered as the key to ‘deep learning’. However, although researchers agree that reflection is a vital aspect of online learning, and even that new technologies can promote reflection, there is a surprising lack of clarity about what reflection actually means in e-learning contexts. This paper reports on a survey of the literature on reflection in online postsecondary learning for the years 2000–2015. Reading, rereading and reflecting on the 46 articles, papers and theses that met the search criteria, the author found that studies on the topic tend to be based on diverse, vague and questionable understandings about what reflection entails. A major implication is that, lacking a clear understanding of what is being studied, research can only yield inconclusive findings about the strategies that prompt and support students’ reflection in online postsecondary education.  相似文献   
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Responding by exclusion is a type of emergent repertoire in which an individual chooses an alternative by the apparent exclusion of other available alternatives. In this case it is possible to respond appropriately to an undefined stimulus (one that has not previously acquired discriminative functions) by excluding the defined alternatives. There is evidence of exclusion in humans and nonhuman animals, although learning as an outcome of exclusion does not always occur. This study aimed to investigate exclusion in visual simple discriminations and learning of new simple discriminations resulting from exclusion in four border collies. Subjects were trained to perform simple simultaneous discriminations between pairs of tridimensional objects, and were then tested for exclusion, novelty control and learning of new simple discriminations. All dogs successfully responded by exclusion, choosing an undefined stimulus displayed with an S‐. For three dogs, it was possible to conclude that these previously undefined stimuli acquired S+ functions, documenting learning of new simple discriminations. However, this required up to four exposures to exclusion trials with each pair of stimuli.  相似文献   
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Emotions associated with memories for the loss of a loved one and for negative events in general decrease in intensity more than memories associated with positive events, a phenomenon known as the fading affect bias (FAB). We tested whether FAB was cross‐culturally evident by collecting positive, negative, and memories for the deaths of loved ones from Filipinos. Memories were coded as violent/nonviolent and resolved/unresolved, and we predicted that resolved memories should show greater fading and that affective details should be lower in those memory accounts. FAB analyses revealed that negative affective intensity faded while positive affect remained constant, supporting FAB for positive and negative memories. However, there was no evidence of FAB in Filipinos' death memories. Filipinos' positive memories were distributed from the period of the reminiscence bump and focused on themes of childbirth and marriage, while negative and death memories did not cluster at any period of life.Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
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Several episodic simulation studies have suggested that the plausibility of future events may be influenced by the disparateness of the details comprising the event. However, no study had directly investigated this idea. In the current study, we designed a novel episodic combination paradigm that varied the disparateness of details through a social sphere manipulation. Participants recalled memory details from three different social spheres. Details were recombined either within spheres or across spheres to create detail sets for which participants imagined future events in a second session. Across-sphere events were rated as significantly less plausible than within-sphere events and were remembered less often. The presented paradigm, which increases control over the disparateness of details in future event simulations, may be useful for future studies concerned with the similarity of the simulations to previous events and its plausibility.  相似文献   
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Prior research has revealed that having choice over treatments can improve their efficacy. However, it is currently unknown if the benefits of treatment choice hold for complex decisions and different cultures. The effects of differing numbers of treatment options were explored across two cultural contexts: United States and Japan. Participants were exposed to an uncomfortable stimulus and provided with up to 15 placebo treatment options they believed would reduce discomfort. There was a significant interaction such that participants from Japan benefited most from fewer treatment options (2 and 5) compared with more treatment options (10 and 15). Participants from the United States, however, showed either no change in discomfort or less discomfort as the number of choices increased. Additionally, participants from Japan reported less satisfaction with the decision process when they had more treatment options to choose from whereas U.S. participants reported similar, if not slightly higher, satisfaction with more treatment options. Further, a second study indicated that a positive experience with the decision process mediated the relationship between choice complexity and treatment efficacy for Japanese participants. These data demonstrate the importance of culture and choice complexity when discussing treatment choice and resulting outcomes in the medical context. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
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This study explored television viewing of the September 11 attacks in 99 survivors of the Oklahoma City bombing and examined the relationships of event-related television viewing with concerns about safety and danger in survivors with and without bombing-related posttraumatic stress disorder. The number of hours of viewing September 11 television coverage was related to worry about personal and family danger and to increased checking on loved ones but not to September 11–related posttraumatic responses. Some bombing survivors discontinued September 11 media contact due to fear. The findings suggest the importance of monitoring television viewing in survivors of prior incidents.  相似文献   
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