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871.
We describe and analyse the incidence and nature of bullying behaviours in male adolescent athletes (n = 1458), from 9 different sports, and 97 sport clubs, across Portugal. We collected information about the prevalence of roles in bullying, types of bullying, the frequency and duration of episodes, the location and activities in which they occur, the number of athletes involved, the feelings of those involved, communication of victims and bullies about their involvement in bullying episodes, the reasons ascribed, coping strategies and victim support sources. Altogether about 10% of athletes reported having been victimized, 11% participated in bullying episodes as bullies, and 35% as bystanders. Bullying episodes were usually characterized by low frequency and low duration and were most frequently verbal bullying inside the sport club. However, when episodes became repeated and with long duration,this tended to generalize to multiple types of bullying (especially verbal and social) and multiple places where episodes occurred, in sport clubs and also in competition. We conclude that bullying in youth sport training is an important topic; there is a need for both prevention and early broadly based intervention which involves coaches, peers and family.  相似文献   
872.
Applied Research in Quality of Life - By 2015, 80% of the population in South America was living in urban areas. Although children in urban areas, on average, enjoy better conditions than children...  相似文献   
873.
Marsman  M.  Sigurdardóttir  H.  Bolsinova  M.  Maris  G. 《Psychometrika》2019,84(3):870-891
Psychometrika - In this paper we study the statistical relations between three latent trait models for accuracies and response times: the hierarchical model (HM) of van der Linden (Psychometrika...  相似文献   
874.
875.
This paper deals with the influence of shame on the way in which Western society, particularly North America, is coping with death and dying. From being a familiar event, death and dying have become a shameful aspect of life. Thus, this paper provides some understanding of this important transformation, and it challenges some of our present attitudes regarding death and dying. These human experiences are not the ultimate manifestation of a failure, either from a personal or a medical perspective, but the only way through which human beings acquire the fullness of life, as Christian faith reveals.  相似文献   
876.
Four experiments were conducted to explore outcome-specific transfer from causal predictive judgments to instrumental responding. A video game was designed in which participants had to defend Andalusia from navy and air force attacks. First, they learned the relationship between two instrumental responses (two key on a standard keyboard) and two different outcomes (destruction of the ships or destruction of the planes). Then they learned to predict which of two different stimuli predicted which outcome. Finally, they had the opportunity of making either of the two instrumental responses in the presence of either stimulus. Transfer was shown as a preference for the response that shared an outcome with the current stimulus. The presentation of the stimulus during the test produced a decrease in the overall rate of response. Responding to a neutral stimulus in Experiments 2 and 3 suggested that this overall decrease in responding was due to a combination of the time needed to process the meaning of the stimulus and the activation of the representation of the outcome in the presence of the stimulus during the test. Transfer between predictive judgments and instrumental responding mirrors the outcome-specific Pavlovian instrumental transfer observed in conditioning studies with rats.  相似文献   
877.
Extinction of auditory fear conditioning is thought to form a new memory. We previously found that rats with vmPFC lesions could extinguish fear to the tone within a session, but showed no recall of extinction 24 h later. One interpretation is that the vmPFC is the sole storage site of extinction memory. However, it is also possible that lesioned rats were unable to retrieve extinction memory stored in other structures. To determine if a latent extinction memory could be retrieved with additional training, we repeated the experiment but added an additional 5 d of extinction reminder trials. Replicating our previous findings, vmPFC-lesioned rats extinguished normally on day 1, but showed no recall of extinction on day 2. Over the next 5 d, however, lesioned rats showed significant savings in their rate of re-extinction. Thus, the vmPFC is not the only site where extinction memory is stored. Nevertheless, lesioned rats receiving only two extinction trials per day required twice as many days to initiate extinction as controls. Although recall of extinction is possible without the vmPFC, it is significantly delayed. We suggest that the vmPFC accelerates extinction by permitting access to recently learned extinction trials, thereby maximizing behavioral flexibility.  相似文献   
878.
The ability of animals to use behavioral/facial cues in detection of human attention has been widely investigated. In this test series we studied the ability of dogs to recognize human attention in different experimental situations (ball-fetching game, fetching objects on command, begging from humans). The attentional state of the humans was varied along two variables: (1) facing versus not facing the dog; (2) visible versus non-visible eyes. In the first set of experiments (fetching) the owners were told to take up different body positions (facing or not facing the dog) and to either cover or not cover their eyes with a blindfold. In the second set of experiments (begging) dogs had to choose between two eating humans based on either the visibility of the eyes or direction of the face. Our results show that the efficiency of dogs to discriminate between attentive and inattentive humans depended on the context of the test, but they could rely on the orientation of the body, the orientation of the head and the visibility of the eyes. With the exception of the fetching-game situation, they brought the object to the front of the human (even if he/she turned his/her back towards the dog), and preferentially begged from the facing (or seeing) human. There were also indications that dogs were sensitive to the visibility of the eyes because they showed increased hesitative behavior when approaching a blindfolded owner, and they also preferred to beg from the person with visible eyes. We conclude that dogs are able to rely on the same set of human facial cues for detection of attention, which form the behavioral basis of understanding attention in humans. Showing the ability of recognizing human attention across different situations dogs proved to be more flexible than chimpanzees investigated in similar circumstances.  相似文献   
879.
880.
Numerous studies have found that word frequency has a significant effect on the time it takes to name an object or read a word. Recently, claims have been made that this frequency effect is perhaps more correctly interpreted as an age of acquisition effect. This paper reports an experiment in which naming times in Icelandic for 175 stimuli from the Snodgrass and Vanderwart picture set were determined. A multiple regression analysis of naming times against a number of independent factors showed that objective age of acquisition was the strongest predictor of naming time, with familiarity and name agreement also showing a significant effect. The effect of word frequency was, however, not significant. Possible reasons for this are discussed.  相似文献   
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