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281.
Chapell M Casey D De la Cruz C Ferrell J Forman J Lipkin R Newsham M Sterling M Whittaker S 《Adolescence》2004,39(153):53-64
This study explored bullying in college by students and teachers. The reports of a sample of 1,025 undergraduates indicated that 24.7% had seen students bully other students occasionally and 2.8% very frequently, 5% had been bullied by students occasionally and 1.1% very frequently, 12.8% had seen teachers bully students occasionally and 1.9% very frequently, 4.2% had been bullied by teachers occasionally and .5% very frequently, while 3.2% had bullied other students occasionally and 1.9% very frequently. Male students bullied significantly more than females. Student bullying was predicted by having seen other students bully, and by having been bullied by both students and teachers. 相似文献
282.
Casey BJ Davidson MC Hara Y Thomas KM Martinez A Galvan A Halperin JM Rodríguez-Aranda CE Tottenham N 《Developmental science》2004,7(5):534-542
This study examined the cognitive and neural development of attention switching using a simple forced-choice attention task and functional magnetic resonance imaging Fourteen children and adults made discriminations among stimuli based on either shape or color. Performance on these trials was compared to performance during blocked trials requiring all color or all shape discriminations. Magnetic resonance echo planar images were acquired during performance of the task. Both children and adults showed robust bilateral activity of the caudate nucleus when switching attention between color and shape discriminations that correlated negatively with mean response latency on these trials. However, neither switching costs nor caudate activity correlated with age, suggesting early development of the underlying neural circuitry involved in switching between salient stimulus sets. Overall, children and adults differed in performance and patterns of brain activity on the task, with adults responding more accurately and faster than children, and recruiting more prefrontal and parietal regions. These results suggest an important role of subcortical regions (i.e. caudate nucleus) in non-cued attention switching, with increasing recruitment of cortical regions with age. 相似文献
283.
Janis?J.?CrowEmail author James?Shanteau John?D.?Casey 《Behavior research methods》2003,35(2):259-262
Traditional investigations of consumer choice processes include a matrix of alternatives described by attributes. The researcher-createdmatrix presents a product option space for the participant. In this article, we propose an alternative methodological approach to consumer choice processes. Specifically, we investigate choice processes when a participant creates his/her own product space. We describe a Web-based program and methodology used to collect data for three customizable products. Empirical results indicate that consumers are willing and able to make choices from their own product space. This research provides a new avenue for exploring choice processes. 相似文献
284.
Durston S Davidson MC Tottenham N Galvan A Spicer J Fossella JA Casey BJ 《Developmental science》2006,9(1):1-8
Recent imaging studies have suggested that developmental changes may parallel aspects of adult learning in cortical activation becoming less diffuse and more focal over time. However, while adult learning studies examine changes within subjects, developmental findings have been based on cross-sectional samples and even comparisons across studies. Here, we used functional MRI in children to test directly for shifts in cortical activity during performance of a cognitive control task, in a combined longitudinal and cross-sectional study. Our longitudinal findings, relative to our cross-sectional ones, show attenuated activation in dorsolateral prefrontal cortical areas, paralleled by increased focal activation in ventral prefrontal regions related to task performance. 相似文献
285.
The human brain undergoes significant changes in both its structural architecture and functional organization across the life span. Advances in neuroimaging techniques over the past decade have allowed us to track these changes safely in the human in vivo. We review the imaging literature on the neurobiology of cognitive development, focusing specifically on cognitive task-dependent changes observed in brain physiology and anatomy across childhood and adolescence. The findings suggest that cortical function becomes fine-tuned with development. Brain regions associated with more basic functions such as sensory and motor processes mature first, followed by association areas involved in top-down control of behavior. 相似文献
286.
Wong AC Gauthier I Woroch B DeBuse C Curran T 《Cognitive, affective & behavioral neuroscience》2005,5(3):306-318
Expertise with print is likely to optimize visual processes for recognizing characters of a familiar writing system. Although
brain activations have been identified for words and letter strings in contrast with other stimuli, relatively little work
has focused on the neural basis of single-letter perception. English readers and Chinese-English bilinguals participated in
an ERP study and performed a 1-back identity judgment on Roman letters, Chinese characters, pseudofonts, and their string
versions. The Chinese-English bilinguals showed an enhanced N170 for both Roman letters and Chinese characters relative to
pseudofonts. For the non-Chinese readers, the N170 amplitude was larger for Roman letters relative to Chinese characters and
pseudofonts. Our results suggest that changes in relatively early visual processes underlie expert letter perception. 相似文献
287.
This longitudinal study examined posttraumatic stress disorder (PTSD) symptoms among current and former female partners (N = 96) of men participating in a group treatment program for partner abuse perpetrators. Female partner probable PTSD rates, obtained during time points corresponding with pretreatment, posttreatment, and 6-month follow-up for the male clients, were 52%, 34%, and 29%, respectively. Psychological abuse exposure was more strongly and uniquely associated with PTSD symptoms than was physical abuse exposure. Among psychological abuse ratings, denigration, restrictive engulfment, and dominance/intimidation behaviors evidenced the strongest associations with PTSD symptoms. Findings from this study suggest the association between psychological abuse and PTSD is complex and multidetermined. 相似文献
288.
Ladouceur CD Dahl RE Williamson DE Birmaher B Ryan ND Casey BJ 《Journal of abnormal child psychology》2005,33(2):165-177
The goal of this study was to examine some of the mechanisms underlying emotion regulation in childhood affective disorders by examining the impact of distracting emotional information during performance on a working memory task (Emotional n-back or E-n-back). The sample included 75 children (38 girls and 37 boys) between 8 and 16 years of age meeting criteria for: Anxiety disorder (ANX, n = 17), Major depressive disorder (MDD, n = 16), Comorbid anxiety and depression (CAD, n = 24), or Low-risk normal control (LRNC, n = 18). Results showed that the MDD and CAD groups had significantly longer reaction times on negative emotional backgrounds compared to neutral backgrounds, whereas the LRNC group had significantly longer reaction times on positive backgrounds. These results suggest altered processing of emotional information particularly associated with depression. Because the E-n-back task engages higher-order cognitive processes, these results suggest that these alterations in processing emotional information also interfere with the cognitive processes that govern how attentional resources are allocated. Further, research is needed to replicate this study and delineate underlying neural mechanisms. 相似文献
289.
Although hundreds of studies have found a positive relationship between self-efficacy and performance, several studies have found a negative relationship when the analysis is done across time (repeated measures) rather than across individuals. W. T. Powers (1991) predicted this negative relationship based on perceptual control theory. Here, 2 studies are presented to (a) confirm the causal role of self-efficacy and (b) substantiate the explanation. In Study 1, self-efficacy was manipulated for 43 of 87 undergraduates on an analytic game. The manipulation was negatively related to performance on the next trial. In Study 2, 104 undergraduates played the analytic game and reported self-efficacy between each game and confidence in the degree to which they had assessed previous feedback. As expected, self-efficacy led to overconfidence and hence increased the likelihood of committing logic errors during the game. 相似文献
290.
Bradley-Geist JC King EB Skorinko J Hebl MR McKenna C 《Personality & social psychology bulletin》2010,36(11):1564-1575
People express more prejudice if they have established their "moral credentials." Five studies explored the acquisition of moral credentials through associations with racial minorities, particularly close relationships that are personally chosen. Participants choosing to write about a positive experience with a Black person (Study 1) or Hispanic person (Study 2) subsequently expressed more preference for Whites and tolerance of prejudice than did other participants. In Study 3, the credentialing effect of choice was diminished when participants were given an incentive for that choice. Participants in Study 4 who wrote about a Black friend were more credentialed than those who wrote about a Black acquaintance, regardless of whether the experience was positive or negative. Study 5 suggested that participants strategically referred to close associations with minorities when warned of a future situation in which they might appear prejudiced. 相似文献