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161.
Our perception of the world remains stable despite the retinal shifts that occur with each saccade. The role of spatial attention in matching pre- to postsaccadic visual information has been well established, but the role of feature-based attention remains unclear. In this study, we examined the transsaccadic processing of a color pop-out target. Participants made a saccade towards a neutral target and performed a search task on a peripheral array presented once the saccade landed. A similar array was presented just before the saccade and we analyzed what aspect of this preview benefitted the postsaccadic search task. We assessed the preview effect in the spatiotopic and retinotopic reference frames, and the potential transfer of feature selectivity across the saccade. In the first experiment, the target and distractor colors remained identical for the preview and the postsaccadic array and performance improved. The largest benefit was observed at the spatiotopic location. In the second experiment, the target and distractor colors were swapped across the saccade. All responses were slowed but the cost was least at the spatiotopic location. Our results show that the preview attracted spatial attention to the target location, which was then remapped, and suggest that previewed features, specifically colors, were transferred across the saccade. Furthermore, the preview induced a spatiotopic advantage regardless of whether the target switched color or not, suggesting that spatiotopy was established independently of feature processing. Our results support independent priming effects of features versus location and underline the role of feature-based selection in visual stability.  相似文献   
162.
Little is known about factors determining which families utilize genetic counseling services. We conducted semistructured interviews with parents of four children born with cystic fibrosis (CF) and ten with Down's syndrome (DS) to ascertain reasons for using, or not using, genetic counseling services in the state of Victoria, Australia. We also explored the usefulness of genetic counseling for the families who had experienced it, and the perceived role of genetic counseling. All mothers of children with CF see a genetic counselor as part of a structured education program following diagnosis through newborn screening. Information overload was identified by them as an important problem. There is no specific program for families of children with DS. Six of them had received genetic counseling and four had not, either because it was not specifically offered to them or because they did not pursue it in the context of misconceptions about its purpose. The timing of the offer of genetic counseling is important and needs to take into account parents' coping strategies after diagnosis. Several parents commented on the favorable aspects of counseling, including getting information they needed to deal with the diagnosis and relief of guilt. Better awareness of genetic counseling by referring physicians, and providing counseling at more than one visit, may contribute to a more effective service.  相似文献   
163.
Playground mishaps are some of the most common sources of injury and are the leading killer of children. The present study used a multiple baseline design across three classrooms (N = 379 children). With minimal teaching and rewards, children decreased and maintained decreased risky playground behaviors on slides. Floor effects on climbers prevented the demonstration of similar effects. The decreases seen in risky slide behavior are discussed within the context of preventive safety training for playground injuries.  相似文献   
164.
College students and middle-aged adults provided memories of occasions when they felt especially good or especially bad about themselves. Probes directed the memory search to several age intervals during childhood, adolescence, and adulthood. Predominant themes represented in self-esteem memories differed consistently as a function of emotional valence. Memories of positive self-worth frequently focused on achievement/mastery themes, whereas memories of negative self-worth frequently focused on interpersonal/affiliation themes. When people evaluate the self through the lens of autobiographical memory, interpersonal distress is portrayed as especially damaging and achievement success is portrayed as especially enhancing. The asymmetry between positive and negative self-esteem memories is explained using multiple theoretical perspectives within social and personality psychology.  相似文献   
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166.
This study provided a simultaneous confirmatory test of the theory of planned behavior (TPB) in predicting heavy episodic drinking (HED) among college students. It was hypothesized that past HED, drinking attitudes, subjective norms, and drinking refusal self-efficacy would predict intention, which would, in turn, predict future HED. Participants consisted of 131 college drinkers (63% women) who reported having engaged in HED in the previous 2 weeks. Participants were recruited and completed questionnaires within the context of a larger intervention study (see Collins & Carey, 2005). Latent factor structural equation modeling was used to test the ability of the TPB to predict HED. Chi-square tests and fit indices indicated good fit for the final structural models. Self-efficacy and attitudes but not subjective norms significantly predicted baseline intention, and intention and past HED predicted future HED. Contrary to hypotheses, however, a structural model excluding past HED provided a better fit than a model including it. Although further studies must be conducted before a definitive conclusion is reached, a TPB model excluding past behavior, which is arguably more parsimonious and theory driven, may predict HED among college drinkers better than a model including past behavior.  相似文献   
167.
Depressive disorders in children with chronic illnesses have received little attention despite some evidence suggesting that these children experience increased psychological difficulties as a result of their medical condition. Most of the research on depressive disorders among children has been conducted primarily with Caucasian youth, limiting generalizability to ethnically diverse populations. Further, even less research exists on depressive disorders among African American children with Sickle Cell Disease (SCD) and for African American youth from lower socioeconomic status who are at greater risk for depressive disorders. This paper is an extensive review of the major studies conducted on depression and psychosocial aspects of SCD in African American children. The Transactional Stress and Coping model is provided as a conceptual framework. Following the review, clinical and research implications are provided, as well as an illustration of a psychoeducational family intervention with an African American child who has SCD and internalizing behaviors.  相似文献   
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169.
Change blindness (CB) occurs when people miss changes across views. Hypothetically, CB would occur if observers failed to represent information about the changing object, but CB would also occur if observers represented and failed to compare information across views, or represented only the pre- or post-change object. For a variety of reasons, previous studies have been unable to determine which of these alternatives contribute to CB in an incidental real-world setting. To address these ambiguities, we conducted two real-world experiments using stimuli that changed on only one feature and tested recognition memory for both the changing feature and a non-changing feature. Participants also provided confidence ratings on recognition responses, allowing us to test whether CB has multiple causes within a single task setting. The results suggest that, in a single real-world setting, CB can be caused by both a failure to represent and a failure to compare information across views.  相似文献   
170.
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